{
  "version": "200-design-2026-10-15",
  "curvePolicy": "20章×10关；章内8峰值、9回落、10收束。首次出现机制用极简教学取代该位置的挑战。目标难度为待测假设。",
  "chapters": [
    {
      "id": 1,
      "title": "走遍每格",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 8
    },
    {
      "id": 2,
      "title": "认识通道",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 18
    },
    {
      "id": 3,
      "title": "颜色接力",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 28
    },
    {
      "id": 4,
      "title": "安排奇偶",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 38
    },
    {
      "id": 5,
      "title": "门的节奏",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 48
    },
    {
      "id": 6,
      "title": "六向连接",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 58
    },
    {
      "id": 7,
      "title": "从哪里开始",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 68
    },
    {
      "id": 8,
      "title": "通道与颜色",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 78
    },
    {
      "id": 9,
      "title": "奇偶与门",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 88
    },
    {
      "id": 10,
      "title": "区域与出口",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 98
    },
    {
      "id": 11,
      "title": "交错规划",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 108
    },
    {
      "id": 12,
      "title": "多线索协作",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 118
    },
    {
      "id": 13,
      "title": "方向与节拍",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 128
    },
    {
      "id": 14,
      "title": "跨区的选择",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 138
    },
    {
      "id": 15,
      "title": "留住通路",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 148
    },
    {
      "id": 16,
      "title": "复合推理",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 158
    },
    {
      "id": 17,
      "title": "寻找突破口",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 168
    },
    {
      "id": 18,
      "title": "长线布局",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 178
    },
    {
      "id": 19,
      "title": "综合挑战",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 188
    },
    {
      "id": 20,
      "title": "最后的花园",
      "introduced": [],
      "focus": "教学后练习；第8关峰值，第9关回落，第10关收束",
      "peak": 198
    }
  ],
  "levels": [
    {
      "displayOrder": 1,
      "levelId": "campaign200-001",
      "chapter": 1,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-001",
      "unknownStart": false,
      "teachingGoal": "从1开始，每格走一次，共边才能连接。",
      "tutorial": "basic",
      "geometry": "square",
      "features": [],
      "nodeCountTarget": 3,
      "title": "引导 · 第一笔",
      "caption": "从1开始，每格走一次，共边才能连接。"
    },
    {
      "displayOrder": 2,
      "levelId": "campaign200-002",
      "chapter": 1,
      "role": "练习",
      "targetDifficulty": 16,
      "designKey": "c200-002",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "de71e06d-ed2b-5371-a3dd-7089ccff10b3",
      "geometry": "square",
      "features": [],
      "nodeCountTarget": 8,
      "title": "先收短支路",
      "caption": "走错沿来时路逐格退回，松手也能继续画。"
    },
    {
      "displayOrder": 3,
      "levelId": "campaign200-003",
      "chapter": 1,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-003",
      "unknownStart": false,
      "teachingGoal": "大块是一个整体，走进整块只算一步。",
      "tutorial": "big",
      "geometry": "blocks",
      "features": [
        "big"
      ],
      "nodeCountTarget": 3,
      "title": "引导 · 整块一步",
      "caption": "大块是一个整体，走进整块只算一步。"
    },
    {
      "displayOrder": 4,
      "levelId": "campaign200-004",
      "chapter": 1,
      "role": "练习",
      "targetDifficulty": 18,
      "designKey": "c200-004",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "f521de33-0d27-54c1-9c04-8fe43955132c",
      "geometry": "blocks",
      "features": [
        "big"
      ],
      "nodeCountTarget": 8,
      "title": "大块一步",
      "caption": "整块大格只算一步。"
    },
    {
      "displayOrder": 5,
      "levelId": "campaign200-005",
      "chapter": 1,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-005",
      "unknownStart": false,
      "teachingGoal": "L形也是一整块：不按面积增加步数。",
      "tutorial": "irregular",
      "geometry": "blocks",
      "features": [
        "big"
      ],
      "nodeCountTarget": 3,
      "title": "引导 · 认识异形",
      "caption": "L形也是一整块：不按面积增加步数。"
    },
    {
      "displayOrder": 6,
      "levelId": "campaign200-006",
      "chapter": 1,
      "role": "练习",
      "targetDifficulty": 20,
      "designKey": "c200-006",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big"
      ],
      "nodeCountTarget": 6,
      "title": "大块的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 7,
      "levelId": "campaign200-007",
      "chapter": 1,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-007",
      "unknownStart": false,
      "teachingGoal": "黑黄墙不能穿过，从另一侧绕过去。",
      "tutorial": "walls",
      "geometry": "square",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 4,
      "title": "引导 · 永久墙",
      "caption": "黑黄墙不能穿过，从另一侧绕过去。"
    },
    {
      "displayOrder": 8,
      "levelId": "campaign200-008",
      "chapter": 1,
      "role": "峰值",
      "targetDifficulty": 26,
      "designKey": "c200-008",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "c27d6782-9897-56e4-9024-27a725af609a",
      "geometry": "square",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 9,
      "title": "绕过去就好",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 9,
      "levelId": "campaign200-009",
      "chapter": 1,
      "role": "回落",
      "targetDifficulty": 5,
      "designKey": "c200-009",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 5,
      "title": "墙的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 10,
      "levelId": "campaign200-010",
      "chapter": 1,
      "role": "收束",
      "targetDifficulty": 16,
      "designKey": "c200-010",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "21ceadc1-cd0e-511b-b7d3-d227e01de8a1",
      "geometry": "square",
      "features": [],
      "nodeCountTarget": 5,
      "title": "第一笔",
      "caption": "从1开始，走遍全部格，收尾时不要留下孤格。"
    },
    {
      "displayOrder": 11,
      "levelId": "campaign200-011",
      "chapter": 2,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-011",
      "unknownStart": false,
      "teachingGoal": "横通道必须从左、右两侧进出，不能拐弯。",
      "tutorial": "straight",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 6,
      "title": "引导 · 左右直行",
      "caption": "横通道必须从左、右两侧进出，不能拐弯。"
    },
    {
      "displayOrder": 12,
      "levelId": "campaign200-012",
      "chapter": 2,
      "role": "练习",
      "targetDifficulty": 18,
      "designKey": "c200-012",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 8,
      "title": "通道的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 13,
      "levelId": "campaign200-013",
      "chapter": 2,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-013",
      "unknownStart": false,
      "teachingGoal": "竖通道必须从上、下两侧进出，不能横走。",
      "tutorial": "vertical",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 6,
      "title": "引导 · 上下直行",
      "caption": "竖通道必须从上、下两侧进出，不能横走。"
    },
    {
      "displayOrder": 14,
      "levelId": "campaign200-014",
      "chapter": 2,
      "role": "练习",
      "targetDifficulty": 20,
      "designKey": "c200-014",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "07323e0e-de6c-5d71-8876-e3d88d008b60",
      "geometry": "blocks",
      "features": [
        "big"
      ],
      "nodeCountTarget": 10,
      "title": "枢纽留后",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 15,
      "levelId": "campaign200-015",
      "chapter": 2,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-015",
      "unknownStart": false,
      "teachingGoal": "这个拐角只连接左、上两侧，必须按图进出。",
      "tutorial": "corner",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 6,
      "title": "引导 · 拐角进出",
      "caption": "这个拐角只连接左、上两侧，必须按图进出。"
    },
    {
      "displayOrder": 16,
      "levelId": "campaign200-016",
      "chapter": 2,
      "role": "练习",
      "targetDifficulty": 22,
      "designKey": "c200-016",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "9edd9ff2-ed54-5fd8-a0e5-8c477b3100bc",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 9,
      "title": "左右通道",
      "caption": "横通道只从左右进出，也可反向走。"
    },
    {
      "displayOrder": 17,
      "levelId": "campaign200-017",
      "chapter": 2,
      "role": "练习",
      "targetDifficulty": 23,
      "designKey": "c200-017",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "852f0119-285e-5ec3-9569-8e34485bcf74",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 10,
      "title": "上下通道",
      "caption": "竖通道只从上下进出。"
    },
    {
      "displayOrder": 18,
      "levelId": "campaign200-018",
      "chapter": 2,
      "role": "峰值",
      "targetDifficulty": 28,
      "designKey": "c200-018",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 10,
      "title": "通道 · 墙的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 19,
      "levelId": "campaign200-019",
      "chapter": 2,
      "role": "回落",
      "targetDifficulty": 7,
      "designKey": "c200-019",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "23914286-0aa4-5d7a-afd1-b5a31c0c1a6e",
      "geometry": "square",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 9,
      "title": "边上的墙",
      "caption": "黑黄墙封住这条边，整局不会打开。"
    },
    {
      "displayOrder": 20,
      "levelId": "campaign200-020",
      "chapter": 2,
      "role": "收束",
      "targetDifficulty": 18,
      "designKey": "c200-020",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "0b255856-d185-5314-85e3-4a95eb233b04",
      "geometry": "blocks",
      "features": [
        "big"
      ],
      "nodeCountTarget": 11,
      "title": "认清异形共边",
      "caption": "异形也是整块一步，只看真实共边。"
    },
    {
      "displayOrder": 21,
      "levelId": "campaign200-021",
      "chapter": 3,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-021",
      "unknownStart": false,
      "teachingGoal": "蓝 → 橙 → 蓝，每一步换颜色，相邻同色也不能走。",
      "tutorial": "colour",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation"
      ],
      "nodeCountTarget": 3,
      "title": "引导 · 蓝橙交替",
      "caption": "蓝 → 橙 → 蓝，每一步换颜色，相邻同色也不能走。"
    },
    {
      "displayOrder": 22,
      "levelId": "campaign200-022",
      "chapter": 3,
      "role": "练习",
      "targetDifficulty": 20,
      "designKey": "c200-022",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "a9749d13-9881-5ed8-9fcd-d06589e4e7df",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation"
      ],
      "nodeCountTarget": 9,
      "title": "蓝橙第一步",
      "caption": "蓝→橙→蓝，每一步换颜色。"
    },
    {
      "displayOrder": 23,
      "levelId": "campaign200-023",
      "chapter": 3,
      "role": "练习",
      "targetDifficulty": 21,
      "designKey": "c200-023",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "2a913cf0-2d97-512f-b8d8-bf4b859ac675",
      "geometry": "blocks",
      "features": [
        "big",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "对称小花园",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 24,
      "levelId": "campaign200-024",
      "chapter": 3,
      "role": "练习",
      "targetDifficulty": 22,
      "designKey": "c200-024",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation"
      ],
      "nodeCountTarget": 10,
      "title": "双色的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 25,
      "levelId": "campaign200-025",
      "chapter": 3,
      "role": "练习",
      "targetDifficulty": 23,
      "designKey": "c200-025",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "f509046b-a9b3-5f56-9aeb-e5b772115dfe",
      "geometry": "square",
      "features": [
        "direction"
      ],
      "nodeCountTarget": 11,
      "title": "认清拐角",
      "caption": "拐角连接哪两边，就从哪两边进出。"
    },
    {
      "displayOrder": 26,
      "levelId": "campaign200-026",
      "chapter": 3,
      "role": "练习",
      "targetDifficulty": 24,
      "designKey": "c200-026",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "a9742951-1d48-538e-8d10-f37c3492ed6f",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation"
      ],
      "nodeCountTarget": 12,
      "title": "留下另一种颜色",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 27,
      "levelId": "campaign200-027",
      "chapter": 3,
      "role": "练习",
      "targetDifficulty": 25,
      "designKey": "c200-027",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、通道；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "direction"
      ],
      "nodeCountTarget": 10,
      "title": "双色 · 通道的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 28,
      "levelId": "campaign200-028",
      "chapter": 3,
      "role": "峰值",
      "targetDifficulty": 30,
      "designKey": "c200-028",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "21ae0172-eeda-51ab-a66c-2de946d2541b",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation"
      ],
      "nodeCountTarget": 10,
      "title": "短短的接力",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 29,
      "levelId": "campaign200-029",
      "chapter": 3,
      "role": "回落",
      "targetDifficulty": 9,
      "designKey": "c200-029",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "e85cd2f3-94af-5b5e-bfd5-d513e6a5ba2c",
      "geometry": "square",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 11,
      "title": "近路要绕",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 30,
      "levelId": "campaign200-030",
      "chapter": 3,
      "role": "收束",
      "targetDifficulty": 20,
      "designKey": "c200-030",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、通道；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "direction"
      ],
      "nodeCountTarget": 10,
      "title": "双色 · 通道的花园",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 31,
      "levelId": "campaign200-031",
      "chapter": 4,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-031",
      "unknownStart": false,
      "teachingGoal": "“偶”表示第2、4、6等偶数步到达；这次第2步走进大块。",
      "tutorial": "parity",
      "geometry": "blocks",
      "features": [
        "big",
        "parity"
      ],
      "nodeCountTarget": 3,
      "title": "引导 · 偶数到达",
      "caption": "“偶”表示第2、4、6等偶数步到达；这次第2步走进大块。"
    },
    {
      "displayOrder": 32,
      "levelId": "campaign200-032",
      "chapter": 4,
      "role": "练习",
      "targetDifficulty": 22,
      "designKey": "c200-032",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "9b9c1633-aedf-51f2-a04b-3818a2c6b7db",
      "geometry": "blocks",
      "features": [
        "big",
        "parity"
      ],
      "nodeCountTarget": 10,
      "title": "偶数落脚",
      "caption": "“偶”要求本格的访问步号是偶数。"
    },
    {
      "displayOrder": 33,
      "levelId": "campaign200-033",
      "chapter": 4,
      "role": "练习",
      "targetDifficulty": 23,
      "designKey": "c200-033",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 10,
      "title": "奇偶 · 墙的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 34,
      "levelId": "campaign200-034",
      "chapter": 4,
      "role": "练习",
      "targetDifficulty": 24,
      "designKey": "c200-034",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "2174f62c-3d56-575a-8210-b1535710e9b0",
      "geometry": "blocks",
      "features": [
        "big",
        "parity"
      ],
      "nodeCountTarget": 12,
      "title": "奇数绕行",
      "caption": "“奇”要求本格的访问步号是奇数。"
    },
    {
      "displayOrder": 35,
      "levelId": "campaign200-035",
      "chapter": 4,
      "role": "练习",
      "targetDifficulty": 25,
      "designKey": "c200-035",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "1bcbf26f-650f-5791-b227-dd5e8f0d2dd0",
      "geometry": "blocks",
      "features": [
        "big",
        "parity"
      ],
      "nodeCountTarget": 12,
      "title": "少量线索也够",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 36,
      "levelId": "campaign200-036",
      "chapter": 4,
      "role": "练习",
      "targetDifficulty": 26,
      "designKey": "c200-036",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、通道；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "direction"
      ],
      "nodeCountTarget": 10,
      "title": "奇偶 · 通道的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 37,
      "levelId": "campaign200-037",
      "chapter": 4,
      "role": "练习",
      "targetDifficulty": 27,
      "designKey": "c200-037",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "a25a4829-f77f-5b4a-9163-4eef9cd3856e",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "回到双色小题",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 38,
      "levelId": "campaign200-038",
      "chapter": 4,
      "role": "峰值",
      "targetDifficulty": 32,
      "designKey": "c200-038",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、通道；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "direction"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 通道的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 39,
      "levelId": "campaign200-039",
      "chapter": 4,
      "role": "回落",
      "targetDifficulty": 11,
      "designKey": "c200-039",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 8,
      "title": "奇偶 · 墙的小径",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 40,
      "levelId": "campaign200-040",
      "chapter": 4,
      "role": "收束",
      "targetDifficulty": 22,
      "designKey": "c200-040",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "44f6955d-e999-5c24-8d71-14dc2d16f8f1",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "两角相接",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 41,
      "levelId": "campaign200-041",
      "chapter": 5,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-041",
      "unknownStart": false,
      "teachingGoal": "起点也算一步，门随落格切换；开时穿过后保持开启。",
      "tutorial": "rhythm-door",
      "geometry": "square",
      "features": [
        "rhythm-door"
      ],
      "nodeCountTarget": 4,
      "title": "引导 · 门随步数切换",
      "caption": "起点也算一步，门随落格切换；开时穿过后保持开启。"
    },
    {
      "displayOrder": 42,
      "levelId": "campaign200-042",
      "chapter": 5,
      "role": "练习",
      "targetDifficulty": 24,
      "designKey": "c200-042",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足门、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "rhythm-door",
        "parity"
      ],
      "nodeCountTarget": 12,
      "title": "门 · 奇偶的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 43,
      "levelId": "campaign200-043",
      "chapter": 5,
      "role": "练习",
      "targetDifficulty": 25,
      "designKey": "c200-043",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "da394472-bef6-53dd-abb2-bc4e7a60f07e",
      "geometry": "square",
      "features": [
        "rhythm-door"
      ],
      "nodeCountTarget": 9,
      "title": "门随脚步开关",
      "caption": "空盘门关，落下起点后门开；通过前每格切换一次，通过后保持开启。"
    },
    {
      "displayOrder": 44,
      "levelId": "campaign200-044",
      "chapter": 5,
      "role": "练习",
      "targetDifficulty": 26,
      "designKey": "c200-044",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "cc92cc4f-1336-544e-81b4-bd6731ed60d3",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation"
      ],
      "nodeCountTarget": 13,
      "title": "双色回环",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 45,
      "levelId": "campaign200-045",
      "chapter": 5,
      "role": "练习",
      "targetDifficulty": 27,
      "designKey": "c200-045",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足门、通道；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "rhythm-door",
        "direction"
      ],
      "nodeCountTarget": 12,
      "title": "门 · 通道的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 46,
      "levelId": "campaign200-046",
      "chapter": 5,
      "role": "练习",
      "targetDifficulty": 28,
      "designKey": "c200-046",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "8f11cd51-0d6d-584a-9d00-babd8e381410",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "直线与拐角",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 47,
      "levelId": "campaign200-047",
      "chapter": 5,
      "role": "练习",
      "targetDifficulty": 29,
      "designKey": "c200-047",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "d1d36cdb-8e4f-57b9-b53a-754da1264744",
      "geometry": "square",
      "features": [
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "从另一侧通过",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 48,
      "levelId": "campaign200-048",
      "chapter": 5,
      "role": "峰值",
      "targetDifficulty": 34,
      "designKey": "c200-048",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足门、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "rhythm-door",
        "parity"
      ],
      "nodeCountTarget": 14,
      "title": "门 · 奇偶的交错",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 49,
      "levelId": "campaign200-049",
      "chapter": 5,
      "role": "回落",
      "targetDifficulty": 13,
      "designKey": "c200-049",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "82766c6c-a705-5340-acf7-d4d46dc113c1",
      "geometry": "blocks",
      "features": [
        "big",
        "parity"
      ],
      "nodeCountTarget": 13,
      "title": "凹口的步号",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 50,
      "levelId": "campaign200-050",
      "chapter": 5,
      "role": "收束",
      "targetDifficulty": 24,
      "designKey": "c200-050",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "a2cbcb61-034a-5215-9a31-035c1c0b96f5",
      "geometry": "blocks",
      "features": [
        "big",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "第一座桥",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 51,
      "levelId": "campaign200-051",
      "chapter": 6,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-051",
      "unknownStart": false,
      "teachingGoal": "六边形有六个共边方向；从1出发，最后第3步到3。",
      "tutorial": "hex",
      "geometry": "hex",
      "features": [],
      "nodeCountTarget": 3,
      "title": "引导 · 六向共边",
      "caption": "六边形有六个共边方向；从1出发，最后第3步到3。"
    },
    {
      "displayOrder": 52,
      "levelId": "campaign200-052",
      "chapter": 6,
      "role": "练习",
      "targetDifficulty": 26,
      "designKey": "c200-052",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "d61b202d-a661-5a76-8b40-0cef0a79480d",
      "geometry": "hex",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 10,
      "title": "六向邻接",
      "caption": "六边形有六个共边方向，墙仍不能穿过。"
    },
    {
      "displayOrder": 53,
      "levelId": "campaign200-053",
      "chapter": 6,
      "role": "练习",
      "targetDifficulty": 27,
      "designKey": "c200-053",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "2c745dac-0edc-5d14-acda-be7bd80331f9",
      "geometry": "hex",
      "features": [
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "六边留出口",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 54,
      "levelId": "campaign200-054",
      "chapter": 6,
      "role": "练习",
      "targetDifficulty": 28,
      "designKey": "c200-054",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 55,
      "levelId": "campaign200-055",
      "chapter": 6,
      "role": "练习",
      "targetDifficulty": 29,
      "designKey": "c200-055",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "d09f715e-948a-5ddc-ac89-1e2fa8e917f3",
      "geometry": "blocks",
      "features": [
        "big",
        "rhythm-door",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "墙和门分开看",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 56,
      "levelId": "campaign200-056",
      "chapter": 6,
      "role": "练习",
      "targetDifficulty": 30,
      "designKey": "c200-056",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "03398b88-7ed6-5bc3-b001-7bbcb825d963",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "六边小花园",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 57,
      "levelId": "campaign200-057",
      "chapter": 6,
      "role": "练习",
      "targetDifficulty": 31,
      "designKey": "c200-057",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 58,
      "levelId": "campaign200-058",
      "chapter": 6,
      "role": "峰值",
      "targetDifficulty": 36,
      "designKey": "c200-058",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "ea61da6f-0488-59bd-b1f5-5e4f4efa4bbd",
      "geometry": "blocks",
      "features": [
        "big",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "顺着节拍收尾",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 59,
      "levelId": "campaign200-059",
      "chapter": 6,
      "role": "回落",
      "targetDifficulty": 15,
      "designKey": "c200-059",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "7f895016-a15f-5d1a-b89b-dce54f3f0986",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "给回起点的短题",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 60,
      "levelId": "campaign200-060",
      "chapter": 6,
      "role": "收束",
      "targetDifficulty": 26,
      "designKey": "c200-060",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 门的花园",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 61,
      "levelId": "campaign200-061",
      "chapter": 7,
      "role": "引导",
      "targetDifficulty": 2,
      "designKey": "c200-061",
      "unknownStart": true,
      "teachingGoal": "没有数字1时可以选择起点；先看数字3在终点。",
      "tutorial": "unknown-start",
      "geometry": "square",
      "features": [],
      "nodeCountTarget": 3,
      "title": "引导 · 寻找起点",
      "caption": "没有数字1时可以选择起点；先看数字3在终点。"
    },
    {
      "displayOrder": 62,
      "levelId": "campaign200-062",
      "chapter": 7,
      "role": "练习",
      "targetDifficulty": 28,
      "designKey": "c200-062",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "f872f251-f6cd-5cf4-a8fa-c3619f948f22",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "墙后先收尾",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 63,
      "levelId": "campaign200-063",
      "chapter": 7,
      "role": "练习",
      "targetDifficulty": 29,
      "designKey": "c200-063",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 64,
      "levelId": "campaign200-064",
      "chapter": 7,
      "role": "练习",
      "targetDifficulty": 30,
      "designKey": "c200-064",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "36adc671-1d28-5c05-96c1-c7f84dff757a",
      "geometry": "hex",
      "features": [
        "alternation"
      ],
      "nodeCountTarget": 13,
      "title": "六边换颜色",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 65,
      "levelId": "campaign200-065",
      "chapter": 7,
      "role": "练习",
      "targetDifficulty": 31,
      "designKey": "c200-065",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "1a91cff3-d0ef-5abc-b4a1-adbc4d70a208",
      "geometry": "hex",
      "features": [
        "parity"
      ],
      "nodeCountTarget": 14,
      "title": "六边也有奇偶",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 66,
      "levelId": "campaign200-066",
      "chapter": 7,
      "role": "练习",
      "targetDifficulty": 32,
      "designKey": "c200-066",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 67,
      "levelId": "campaign200-067",
      "chapter": 7,
      "role": "练习",
      "targetDifficulty": 33,
      "designKey": "c200-067",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "034f2c11-d092-5280-b22d-dbe2b8ca26c2",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "通道再接力",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 68,
      "levelId": "campaign200-068",
      "chapter": 7,
      "role": "峰值",
      "targetDifficulty": 38,
      "designKey": "c200-068",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "7261dec3-e994-5326-8755-2e60168b909c",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "双色跨区",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 69,
      "levelId": "campaign200-069",
      "chapter": 7,
      "role": "回落",
      "targetDifficulty": 17,
      "designKey": "c200-069",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 10,
      "title": "双色 · 墙的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 70,
      "levelId": "campaign200-070",
      "chapter": 7,
      "role": "收束",
      "targetDifficulty": 28,
      "designKey": "c200-070",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "15549f52-37a6-5149-b564-8caf096022fe",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "六边收束",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 71,
      "levelId": "campaign200-071",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 29,
      "designKey": "c200-071",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "a0bd742b-73c2-5dd6-9df9-a69580e5becd",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "颜色之外还有墙",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 72,
      "levelId": "campaign200-072",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 30,
      "designKey": "c200-072",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 双色 · 墙 · 门的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 73,
      "levelId": "campaign200-073",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 31,
      "designKey": "c200-073",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "758c22d7-8b75-5110-befe-9b4b71a749b0",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 16,
      "title": "两个双色枢纽",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 74,
      "levelId": "campaign200-074",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 32,
      "designKey": "c200-074",
      "unknownStart": true,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "2e11044e-f88b-5152-bda8-b1eed66a3888",
      "geometry": "hex",
      "features": [
        "parity"
      ],
      "nodeCountTarget": 12,
      "title": "起点没有写出",
      "caption": "这关没有1，先观察起点。"
    },
    {
      "displayOrder": 75,
      "levelId": "campaign200-075",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 33,
      "designKey": "c200-075",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 76,
      "levelId": "campaign200-076",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 34,
      "designKey": "c200-076",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "a3f362fb-e070-5340-804a-14cb90fef2d4",
      "geometry": "blocks",
      "features": [
        "big",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "大块改变节拍",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 77,
      "levelId": "campaign200-077",
      "chapter": 8,
      "role": "练习",
      "targetDifficulty": 35,
      "designKey": "c200-077",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "d430c0b6-4d1c-50f0-9365-82f40d6bdcdb",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 17,
      "title": "奇偶分配区域",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 78,
      "levelId": "campaign200-078",
      "chapter": 8,
      "role": "峰值",
      "targetDifficulty": 40,
      "designKey": "c200-078",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 79,
      "levelId": "campaign200-079",
      "chapter": 8,
      "role": "回落",
      "targetDifficulty": 19,
      "designKey": "c200-079",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "f79bf403-764d-57e7-a37f-e85dce3b4505",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 16,
      "title": "继续还有新花园",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 80,
      "levelId": "campaign200-080",
      "chapter": 8,
      "role": "收束",
      "targetDifficulty": 30,
      "designKey": "c200-080",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "09653cbe-4ca9-571d-b976-853ac0ecb886",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 18,
      "title": "六边出口互锁",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 81,
      "levelId": "campaign200-081",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 31,
      "designKey": "c200-081",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足双色、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "parity"
      ],
      "nodeCountTarget": 10,
      "title": "双色 · 奇偶的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1,
      "noExtraNumbers": true
    },
    {
      "displayOrder": 82,
      "levelId": "campaign200-082",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 32,
      "designKey": "c200-082",
      "unknownStart": true,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "349e4537-d0e7-545d-be9b-feb7ff23fa2f",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 17,
      "title": "找起点再跨区",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 83,
      "levelId": "campaign200-083",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 33,
      "designKey": "c200-083",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "ba80bb56-a59e-55aa-b586-46d245984ccb",
      "geometry": "square",
      "features": [
        "direction",
        "rhythm-door"
      ],
      "nodeCountTarget": 16,
      "title": "方向决定门路",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 84,
      "levelId": "campaign200-084",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 34,
      "designKey": "c200-084",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 奇偶 · 墙 · 门的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 85,
      "levelId": "campaign200-085",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 35,
      "designKey": "c200-085",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "9ceed4f0-5c12-5251-9cc9-11aafba3e8c3",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "rhythm-door"
      ],
      "nodeCountTarget": 17,
      "title": "先定奇偶，再定节拍",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 86,
      "levelId": "campaign200-086",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 36,
      "designKey": "c200-086",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "71a70b69-ff59-51a3-a149-1dd88868c0f3",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 18,
      "title": "墙通道门三者联动",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 87,
      "levelId": "campaign200-087",
      "chapter": 9,
      "role": "练习",
      "targetDifficulty": 37,
      "designKey": "c200-087",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 88,
      "levelId": "campaign200-088",
      "chapter": 9,
      "role": "峰值",
      "targetDifficulty": 42,
      "designKey": "c200-088",
      "unknownStart": false,
      "teachingGoal": "观察区域出口，用本关机制排除一条诱惑路线。",
      "reuseId": "e96c918b-2f4c-5a18-b443-8ac574f77ad6",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 19,
      "title": "六边综合峰值",
      "caption": "先观察，再画；松手可继续，走错可回退。"
    },
    {
      "displayOrder": 89,
      "levelId": "campaign200-089",
      "chapter": 9,
      "role": "回落",
      "targetDifficulty": 21,
      "designKey": "c200-089",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 11,
      "title": "奇偶 · 墙 · 门的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 90,
      "levelId": "campaign200-090",
      "chapter": 9,
      "role": "收束",
      "targetDifficulty": 32,
      "designKey": "c200-090",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "奇偶 · 墙的花园",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 91,
      "levelId": "campaign200-091",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 33,
      "designKey": "c200-091",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 92,
      "levelId": "campaign200-092",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 34,
      "designKey": "c200-092",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 1
    },
    {
      "displayOrder": 93,
      "levelId": "campaign200-093",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 35,
      "designKey": "c200-093",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 94,
      "levelId": "campaign200-094",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 36,
      "designKey": "c200-094",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 95,
      "levelId": "campaign200-095",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 37,
      "designKey": "c200-095",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 96,
      "levelId": "campaign200-096",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 38,
      "designKey": "c200-096",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 1
    },
    {
      "displayOrder": 97,
      "levelId": "campaign200-097",
      "chapter": 10,
      "role": "练习",
      "targetDifficulty": 39,
      "designKey": "c200-097",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 98,
      "levelId": "campaign200-098",
      "chapter": 10,
      "role": "峰值",
      "targetDifficulty": 44,
      "designKey": "c200-098",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 16,
      "title": "双色 · 墙 · 门的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 99,
      "levelId": "campaign200-099",
      "chapter": 10,
      "role": "回落",
      "targetDifficulty": 23,
      "designKey": "c200-099",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙的小径",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 100,
      "levelId": "campaign200-100",
      "chapter": 10,
      "role": "收束",
      "targetDifficulty": 34,
      "designKey": "c200-100",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的花园",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 1
    },
    {
      "displayOrder": 101,
      "levelId": "campaign200-101",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 35,
      "designKey": "c200-101",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 15,
      "title": "通道 · 双色的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 102,
      "levelId": "campaign200-102",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 36,
      "designKey": "c200-102",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 103,
      "levelId": "campaign200-103",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 37,
      "designKey": "c200-103",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 15,
      "title": "通道 · 奇偶的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 104,
      "levelId": "campaign200-104",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 38,
      "designKey": "c200-104",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "通道 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 105,
      "levelId": "campaign200-105",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 39,
      "designKey": "c200-105",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 106,
      "levelId": "campaign200-106",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 40,
      "designKey": "c200-106",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 107,
      "levelId": "campaign200-107",
      "chapter": 11,
      "role": "练习",
      "targetDifficulty": 41,
      "designKey": "c200-107",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 108,
      "levelId": "campaign200-108",
      "chapter": 11,
      "role": "峰值",
      "targetDifficulty": 46,
      "designKey": "c200-108",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 17,
      "title": "通道 · 墙的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 109,
      "levelId": "campaign200-109",
      "chapter": 11,
      "role": "回落",
      "targetDifficulty": 25,
      "designKey": "c200-109",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "双色 · 墙 · 门的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 110,
      "levelId": "campaign200-110",
      "chapter": 11,
      "role": "收束",
      "targetDifficulty": 36,
      "designKey": "c200-110",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "双色 · 墙的花园",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 111,
      "levelId": "campaign200-111",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 37,
      "designKey": "c200-111",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足双色、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "parity"
      ],
      "nodeCountTarget": 10,
      "title": "双色 · 奇偶的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1,
      "noExtraNumbers": true
    },
    {
      "displayOrder": 112,
      "levelId": "campaign200-112",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 38,
      "designKey": "c200-112",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 双色的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 113,
      "levelId": "campaign200-113",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 39,
      "designKey": "c200-113",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 114,
      "levelId": "campaign200-114",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 40,
      "designKey": "c200-114",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 奇偶的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 115,
      "levelId": "campaign200-115",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 41,
      "designKey": "c200-115",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 116,
      "levelId": "campaign200-116",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 42,
      "designKey": "c200-116",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 117,
      "levelId": "campaign200-117",
      "chapter": 12,
      "role": "练习",
      "targetDifficulty": 43,
      "designKey": "c200-117",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 118,
      "levelId": "campaign200-118",
      "chapter": 12,
      "role": "峰值",
      "targetDifficulty": 48,
      "designKey": "c200-118",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的交错",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 119,
      "levelId": "campaign200-119",
      "chapter": 12,
      "role": "回落",
      "targetDifficulty": 27,
      "designKey": "c200-119",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 10,
      "title": "通道 · 墙的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 120,
      "levelId": "campaign200-120",
      "chapter": 12,
      "role": "收束",
      "targetDifficulty": 38,
      "designKey": "c200-120",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙 · 门的花园",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 121,
      "levelId": "campaign200-121",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 39,
      "designKey": "c200-121",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 122,
      "levelId": "campaign200-122",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 40,
      "designKey": "c200-122",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 123,
      "levelId": "campaign200-123",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 41,
      "designKey": "c200-123",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 双色的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 124,
      "levelId": "campaign200-124",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 42,
      "designKey": "c200-124",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 125,
      "levelId": "campaign200-125",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 43,
      "designKey": "c200-125",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 奇偶的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 126,
      "levelId": "campaign200-126",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 44,
      "designKey": "c200-126",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 127,
      "levelId": "campaign200-127",
      "chapter": 13,
      "role": "练习",
      "targetDifficulty": 45,
      "designKey": "c200-127",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 128,
      "levelId": "campaign200-128",
      "chapter": 13,
      "role": "峰值",
      "targetDifficulty": 50,
      "designKey": "c200-128",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶 · 墙 · 门的交错",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 129,
      "levelId": "campaign200-129",
      "chapter": 13,
      "role": "回落",
      "targetDifficulty": 29,
      "designKey": "c200-129",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 11,
      "title": "奇偶 · 墙 · 门的小径",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 130,
      "levelId": "campaign200-130",
      "chapter": 13,
      "role": "收束",
      "targetDifficulty": 40,
      "designKey": "c200-130",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 墙的花园",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 131,
      "levelId": "campaign200-131",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 41,
      "designKey": "c200-131",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 132,
      "levelId": "campaign200-132",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 42,
      "designKey": "c200-132",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 133,
      "levelId": "campaign200-133",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 43,
      "designKey": "c200-133",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 134,
      "levelId": "campaign200-134",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 44,
      "designKey": "c200-134",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 135,
      "levelId": "campaign200-135",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 45,
      "designKey": "c200-135",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 136,
      "levelId": "campaign200-136",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 46,
      "designKey": "c200-136",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 137,
      "levelId": "campaign200-137",
      "chapter": 14,
      "role": "练习",
      "targetDifficulty": 47,
      "designKey": "c200-137",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 138,
      "levelId": "campaign200-138",
      "chapter": 14,
      "role": "峰值",
      "targetDifficulty": 52,
      "designKey": "c200-138",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色 · 墙 · 门的交错",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 139,
      "levelId": "campaign200-139",
      "chapter": 14,
      "role": "回落",
      "targetDifficulty": 31,
      "designKey": "c200-139",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶 · 墙 · 门的小径",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 140,
      "levelId": "campaign200-140",
      "chapter": 14,
      "role": "收束",
      "targetDifficulty": 42,
      "designKey": "c200-140",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的花园",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 141,
      "levelId": "campaign200-141",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 43,
      "designKey": "c200-141",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足双色、奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 奇偶 · 墙的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1,
      "noExtraNumbers": true
    },
    {
      "displayOrder": 142,
      "levelId": "campaign200-142",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 44,
      "designKey": "c200-142",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 143,
      "levelId": "campaign200-143",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 45,
      "designKey": "c200-143",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 144,
      "levelId": "campaign200-144",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 46,
      "designKey": "c200-144",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 145,
      "levelId": "campaign200-145",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 47,
      "designKey": "c200-145",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 15,
      "title": "通道 · 双色的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 146,
      "levelId": "campaign200-146",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 48,
      "designKey": "c200-146",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 147,
      "levelId": "campaign200-147",
      "chapter": 15,
      "role": "练习",
      "targetDifficulty": 49,
      "designKey": "c200-147",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 15,
      "title": "通道 · 奇偶的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 148,
      "levelId": "campaign200-148",
      "chapter": 15,
      "role": "峰值",
      "targetDifficulty": 54,
      "designKey": "c200-148",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 17,
      "title": "通道 · 墙 · 门的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 149,
      "levelId": "campaign200-149",
      "chapter": 15,
      "role": "回落",
      "targetDifficulty": 33,
      "designKey": "c200-149",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 双色 · 墙 · 门的小径",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 150,
      "levelId": "campaign200-150",
      "chapter": 15,
      "role": "收束",
      "targetDifficulty": 44,
      "designKey": "c200-150",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 16,
      "title": "通道 · 奇偶 · 墙 · 门的花园",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 151,
      "levelId": "campaign200-151",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 45,
      "designKey": "c200-151",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 152,
      "levelId": "campaign200-152",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 46,
      "designKey": "c200-152",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 153,
      "levelId": "campaign200-153",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 47,
      "designKey": "c200-153",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 154,
      "levelId": "campaign200-154",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 48,
      "designKey": "c200-154",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 155,
      "levelId": "campaign200-155",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 49,
      "designKey": "c200-155",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 156,
      "levelId": "campaign200-156",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 50,
      "designKey": "c200-156",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 双色的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 157,
      "levelId": "campaign200-157",
      "chapter": 16,
      "role": "练习",
      "targetDifficulty": 51,
      "designKey": "c200-157",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 158,
      "levelId": "campaign200-158",
      "chapter": 16,
      "role": "峰值",
      "targetDifficulty": 56,
      "designKey": "c200-158",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶的交错",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 159,
      "levelId": "campaign200-159",
      "chapter": 16,
      "role": "回落",
      "targetDifficulty": 35,
      "designKey": "c200-159",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 10,
      "title": "通道 · 墙 · 门的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 160,
      "levelId": "campaign200-160",
      "chapter": 16,
      "role": "收束",
      "targetDifficulty": 46,
      "designKey": "c200-160",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 16,
      "title": "通道 · 双色 · 墙 · 门的花园",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 161,
      "levelId": "campaign200-161",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 47,
      "designKey": "c200-161",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 162,
      "levelId": "campaign200-162",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 48,
      "designKey": "c200-162",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 163,
      "levelId": "campaign200-163",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 49,
      "designKey": "c200-163",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 164,
      "levelId": "campaign200-164",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 50,
      "designKey": "c200-164",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 165,
      "levelId": "campaign200-165",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 51,
      "designKey": "c200-165",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "奇偶 · 墙的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 166,
      "levelId": "campaign200-166",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 52,
      "designKey": "c200-166",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 13,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 167,
      "levelId": "campaign200-167",
      "chapter": 17,
      "role": "练习",
      "targetDifficulty": 53,
      "designKey": "c200-167",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 双色的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 168,
      "levelId": "campaign200-168",
      "chapter": 17,
      "role": "峰值",
      "targetDifficulty": 58,
      "designKey": "c200-168",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 169,
      "levelId": "campaign200-169",
      "chapter": 17,
      "role": "回落",
      "targetDifficulty": 37,
      "designKey": "c200-169",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 11,
      "title": "通道 · 奇偶的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 170,
      "levelId": "campaign200-170",
      "chapter": 17,
      "role": "收束",
      "targetDifficulty": 48,
      "designKey": "c200-170",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙、门；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 墙 · 门的花园",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 171,
      "levelId": "campaign200-171",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 49,
      "designKey": "c200-171",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足双色、奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 奇偶 · 墙的选择",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1,
      "noExtraNumbers": true
    },
    {
      "displayOrder": 172,
      "levelId": "campaign200-172",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 50,
      "designKey": "c200-172",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 173,
      "levelId": "campaign200-173",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 51,
      "designKey": "c200-173",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 174,
      "levelId": "campaign200-174",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 52,
      "designKey": "c200-174",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "双色 · 墙的选择",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 175,
      "levelId": "campaign200-175",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 53,
      "designKey": "c200-175",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 176,
      "levelId": "campaign200-176",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 54,
      "designKey": "c200-176",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 177,
      "levelId": "campaign200-177",
      "chapter": 18,
      "role": "练习",
      "targetDifficulty": 55,
      "designKey": "c200-177",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 178,
      "levelId": "campaign200-178",
      "chapter": 18,
      "role": "峰值",
      "targetDifficulty": 60,
      "designKey": "c200-178",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 16,
      "title": "通道 · 双色的交错",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 179,
      "levelId": "campaign200-179",
      "chapter": 18,
      "role": "回落",
      "targetDifficulty": 39,
      "designKey": "c200-179",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 180,
      "levelId": "campaign200-180",
      "chapter": 18,
      "role": "收束",
      "targetDifficulty": 50,
      "designKey": "c200-180",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity"
      ],
      "nodeCountTarget": 14,
      "title": "通道 · 奇偶的花园",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 181,
      "levelId": "campaign200-181",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 51,
      "designKey": "c200-181",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 16,
      "title": "通道 · 奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 182,
      "levelId": "campaign200-182",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 52,
      "designKey": "c200-182",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 183,
      "levelId": "campaign200-183",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 53,
      "designKey": "c200-183",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "通道 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 184,
      "levelId": "campaign200-184",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 54,
      "designKey": "c200-184",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 185,
      "levelId": "campaign200-185",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 55,
      "designKey": "c200-185",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 186,
      "levelId": "campaign200-186",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 56,
      "designKey": "c200-186",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 187,
      "levelId": "campaign200-187",
      "chapter": 19,
      "role": "练习",
      "targetDifficulty": 57,
      "designKey": "c200-187",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 188,
      "levelId": "campaign200-188",
      "chapter": 19,
      "role": "峰值",
      "targetDifficulty": 62,
      "designKey": "c200-188",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 17,
      "title": "双色 · 墙的交错",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 189,
      "levelId": "campaign200-189",
      "chapter": 19,
      "role": "回落",
      "targetDifficulty": 41,
      "designKey": "c200-189",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 13,
      "title": "通道 · 双色的小径",
      "irregular": true,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 190,
      "levelId": "campaign200-190",
      "chapter": 19,
      "role": "收束",
      "targetDifficulty": 52,
      "designKey": "c200-190",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls"
      ],
      "nodeCountTarget": 15,
      "title": "奇偶 · 墙的花园",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 191,
      "levelId": "campaign200-191",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 53,
      "designKey": "c200-191",
      "unknownStart": true,
      "teachingGoal": "先安排跨区出口，再同时满足双色、奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 奇偶 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1,
      "noExtraNumbers": true
    },
    {
      "displayOrder": 192,
      "levelId": "campaign200-192",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 54,
      "designKey": "c200-192",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 16,
      "title": "通道 · 奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 193,
      "levelId": "campaign200-193",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 55,
      "designKey": "c200-193",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 194,
      "levelId": "campaign200-194",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 56,
      "designKey": "c200-194",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、墙；避免覆盖尾段被封死。",
      "geometry": "square",
      "features": [
        "direction",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 墙的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 195,
      "levelId": "campaign200-195",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 57,
      "designKey": "c200-195",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 196,
      "levelId": "campaign200-196",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 58,
      "designKey": "c200-196",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 12,
      "title": "双色 · 墙的选择",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    },
    {
      "displayOrder": 197,
      "levelId": "campaign200-197",
      "chapter": 20,
      "role": "练习",
      "targetDifficulty": 59,
      "designKey": "c200-197",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙、门；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "parity",
        "walls",
        "rhythm-door"
      ],
      "nodeCountTarget": 12,
      "title": "奇偶 · 墙 · 门的选择",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 198,
      "levelId": "campaign200-198",
      "chapter": 20,
      "role": "峰值",
      "targetDifficulty": 64,
      "designKey": "c200-198",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足奇偶、墙；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "parity",
        "walls"
      ],
      "nodeCountTarget": 14,
      "title": "奇偶 · 墙的交错",
      "irregular": true,
      "doubleBlock": true,
      "directionPattern": [
        "lr",
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 199,
      "levelId": "campaign200-199",
      "chapter": 20,
      "role": "回落",
      "targetDifficulty": 43,
      "designKey": "c200-199",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足双色、墙；避免覆盖尾段被封死。",
      "geometry": "hex",
      "features": [
        "alternation",
        "walls"
      ],
      "nodeCountTarget": 10,
      "title": "双色 · 墙的小径",
      "irregular": false,
      "doubleBlock": false,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 1,
      "wallCount": 1
    },
    {
      "displayOrder": 200,
      "levelId": "campaign200-200",
      "chapter": 20,
      "role": "收束",
      "targetDifficulty": 54,
      "designKey": "c200-200",
      "unknownStart": false,
      "teachingGoal": "先安排跨区出口，再同时满足通道、双色；避免覆盖尾段被封死。",
      "geometry": "blocks",
      "features": [
        "big",
        "direction",
        "alternation"
      ],
      "nodeCountTarget": 12,
      "title": "通道 · 双色的花园",
      "irregular": false,
      "doubleBlock": true,
      "directionPattern": [
        "corner"
      ],
      "parityCount": 2,
      "wallCount": 2
    }
  ]
}