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      "mode": "order",
      "geometry": "square",
      "difficulty": "入门",
      "title": "A 必须先于 B",
      "caption": "每格一次。链中的标记必须依次访问，例如 A < B < C；相隔几步不受限制。",
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          "c4",
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    "reason": "标记次序不符",
    "review": "自动验证通过；难度与人类推理顺序待真人试玩确认"
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      "id": "02",
      "mode": "order",
      "geometry": "square",
      "difficulty": "入门",
      "title": "靠近 B 也要先绕到 A",
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          "id": "c0",
          "x": 0,
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        {
          "id": "c7",
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      ],
      "orderChains": [
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          "c0",
          "c6"
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      ]
    },
    "author": [
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      "c0",
      "c1",
      "c2",
      "c5",
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    "witnesses": [
      {
        "constraint": "order:0:0",
        "path": [
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          "c6",
          "c7",
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          "c5",
          "c2",
          "c1",
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    "keyFork": {
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      "correct": "c0",
      "tempting": "c6"
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    "reason": "标记次序不符",
    "review": "自动验证通过；难度与人类推理顺序待真人试玩确认"
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      "mode": "order",
      "geometry": "square",
      "difficulty": "普通",
      "title": "三标记决定区域顺序",
      "caption": "",
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          "x": 0,
          "y": 0,
          "w": 1,
          "h": 1
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        {
          "id": "c1",
          "x": 1,
          "y": 0,
          "w": 1,
          "h": 1
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        {
          "id": "c2",
          "x": 2,
          "y": 0,
          "w": 1,
          "h": 1
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          "x": 3,
          "y": 0,
          "w": 1,
          "h": 1
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          "id": "c4",
          "x": 0,
          "y": 1,
          "w": 1,
          "h": 1
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          "y": 1,
          "w": 1,
          "h": 1
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        {
          "id": "c6",
          "x": 2,
          "y": 1,
          "w": 1,
          "h": 1
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        {
          "id": "c7",
          "x": 3,
          "y": 1,
          "w": 1,
          "h": 1
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        {
          "id": "c8",
          "x": 1,
          "y": 2,
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          "clue": 1
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        {
          "id": "c9",
          "x": 2,
          "y": 2,
          "w": 1,
          "h": 1
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      "c6",
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      "c0",
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      "c7"
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    "witnesses": [
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        "constraint": "order:0:0",
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          "c0",
          "c1",
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          "c3",
          "c7",
          "c6",
          "c9"
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      {
        "constraint": "order:0:1",
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          "c9",
          "c6",
          "c7",
          "c3",
          "c2",
          "c1",
          "c0",
          "c4",
          "c5"
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    "basePathCount": 34,
    "attempt": 10,
    "breakdown": [
      "c9 先于 c0，作者步号 2<6",
      "c0 先于 c3，作者步号 6<9"
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    "keyFork": {
      "step": 2,
      "correct": "c9",
      "tempting": "c5"
    },
    "reason": "标记次序不符",
    "review": "自动验证通过；难度与人类推理顺序待真人试玩确认"
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  {
    "level": {
      "id": "04",
      "mode": "order",
      "geometry": "square",
      "difficulty": "普通",
      "title": "两条独立先后关系",
      "caption": "",
      "cells": [
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          "y": 0,
          "w": 1,
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        {
          "id": "c1",
          "x": 1,
          "y": 0,
          "w": 1,
          "h": 1
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          "id": "c2",
          "x": 2,
          "y": 0,
          "w": 1,
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        },
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          "y": 1,
          "w": 1,
          "h": 1
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          "w": 1,
          "h": 1
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        {
          "id": "c6",
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          "y": 1,
          "w": 1,
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          "clue": 7
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        {
          "id": "c7",
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          "y": 1,
          "w": 1,
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        {
          "id": "c8",
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          "y": 2,
          "w": 1,
          "h": 1,
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          "id": "c10",
          "x": 2,
          "y": 2,
          "w": 1,
          "h": 1
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        {
          "id": "c11",
          "x": 3,
          "y": 2,
          "w": 1,
          "h": 1
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      ],
      "orderChains": [
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        [
          "c10",
          "c3"
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      "c1",
      "c5",
      "c6",
      "c10",
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      "c3",
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    "witnesses": [
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        "constraint": "order:0:0",
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          "c10",
          "c11",
          "c7",
          "c3",
          "c2",
          "c6",
          "c5",
          "c1",
          "c0",
          "c4",
          "c8"
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      },
      {
        "constraint": "order:1:0",
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          "c0",
          "c1",
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          "c7",
          "c11",
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    "basePathCount": 124,
    "attempt": 0,
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      "c10 先于 c3，作者步号 8<11"
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      "correct": "c8",
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    "reason": "标记次序不符",
    "review": "自动验证通过；难度与人类推理顺序待真人试玩确认"
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  {
    "level": {
      "id": "05",
      "mode": "order",
      "geometry": "square",
      "difficulty": "进阶",
      "title": "共享标记形成部分顺序",
      "caption": "",
      "cells": [
        {
          "id": "c0",
          "x": 0,
          "y": 0,
          "w": 1,
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        {
          "id": "c1",
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          "y": 0,
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          "id": "c2",
          "x": 2,
          "y": 0,
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          "id": "c3",
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          "y": 0,
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          "w": 1,
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          "w": 1,
          "h": 1,
          "clue": 1
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          "id": "c6",
          "x": 2,
          "y": 1,
          "w": 1,
          "h": 1
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        {
          "id": "c7",
          "x": 3,
          "y": 1,
          "w": 1,
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          "clue": 13
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          "y": 2,
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          "h": 1
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          "x": 1,
          "y": 3,
          "w": 1,
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          "y": 3,
          "w": 1,
          "h": 1
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    "attempt": 2,
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    "level": {
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      "mode": "order",
      "geometry": "square",
      "difficulty": "进阶",
      "title": "访问标记时保留后续出口",
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      "cells": [
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        {
          "id": "c9",
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        },
        {
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          "y": 3,
          "w": 1,
          "h": 1
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      ],
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      "title": "两条链交错安排",
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      "c11",
      "c15"
    ],
    "witnesses": [
      {
        "constraint": "order:0:0",
        "path": [
          "c16",
          "c13",
          "c12",
          "c8",
          "c9",
          "c5",
          "c4",
          "c0",
          "c1",
          "c2",
          "c3",
          "c7",
          "c6",
          "c10",
          "c11",
          "c15",
          "c14",
          "c17"
        ]
      },
      {
        "constraint": "order:0:1",
        "path": [
          "c16",
          "c17",
          "c14",
          "c15",
          "c11",
          "c10",
          "c9",
          "c13",
          "c12",
          "c8",
          "c4",
          "c5",
          "c6",
          "c7",
          "c3",
          "c2",
          "c1",
          "c0"
        ]
      },
      {
        "constraint": "order:1:0",
        "path": [
          "c16",
          "c17",
          "c14",
          "c15",
          "c11",
          "c7",
          "c3",
          "c2",
          "c1",
          "c0",
          "c4",
          "c5",
          "c6",
          "c10",
          "c9",
          "c8",
          "c12",
          "c13"
        ]
      },
      {
        "constraint": "order:1:1",
        "path": [
          "c16",
          "c17",
          "c14",
          "c13",
          "c12",
          "c8",
          "c4",
          "c0",
          "c1",
          "c2",
          "c3",
          "c7",
          "c6",
          "c5",
          "c9",
          "c10",
          "c11",
          "c15"
        ]
      }
    ],
    "basePathCount": 464,
    "attempt": 41,
    "breakdown": [
      "c14 先于 c1，作者步号 3<9",
      "c1 先于 c10，作者步号 9<12",
      "c13 先于 c5，作者步号 4<10",
      "c5 先于 c6，作者步号 10<13"
    ],
    "keyFork": {
      "step": 2,
      "correct": "c17",
      "tempting": "c13"
    },
    "reason": "标记次序不符",
    "review": "自动验证通过；难度与人类推理顺序待真人试玩确认"
  },
  {
    "level": {
      "id": "08",
      "mode": "order",
      "geometry": "square",
      "difficulty": "难",
      "title": "无固定起点，由次序确定全路",
      "caption": "",
      "cells": [
        {
          "id": "c0",
          "x": 0,
          "y": 0,
          "w": 1,
          "h": 1
        },
        {
          "id": "c1",
          "x": 1,
          "y": 0,
          "w": 1,
          "h": 1
        },
        {
          "id": "c2",
          "x": 2,
          "y": 0,
          "w": 1,
          "h": 1
        },
        {
          "id": "c3",
          "x": 3,
          "y": 0,
          "w": 1,
          "h": 1
        },
        {
          "id": "c4",
          "x": 0,
          "y": 1,
          "w": 1,
          "h": 1
        },
        {
          "id": "c5",
          "x": 1,
          "y": 1,
          "w": 1,
          "h": 1
        },
        {
          "id": "c6",
          "x": 2,
          "y": 1,
          "w": 1,
          "h": 1
        },
        {
          "id": "c7",
          "x": 3,
          "y": 1,
          "w": 1,
          "h": 1
        },
        {
          "id": "c8",
          "x": 0,
          "y": 2,
          "w": 1,
          "h": 1
        },
        {
          "id": "c9",
          "x": 1,
          "y": 2,
          "w": 1,
          "h": 1
        },
        {
          "id": "c10",
          "x": 2,
          "y": 2,
          "w": 1,
          "h": 1,
          "clue": 7
        },
        {
          "id": "c11",
          "x": 3,
          "y": 2,
          "w": 1,
          "h": 1
        },
        {
          "id": "c12",
          "x": 0,
          "y": 3,
          "w": 1,
          "h": 1
        },
        {
          "id": "c13",
          "x": 1,
          "y": 3,
          "w": 1,
          "h": 1
        },
        {
          "id": "c14",
          "x": 2,
          "y": 3,
          "w": 1,
          "h": 1
        },
        {
          "id": "c15",
          "x": 3,
          "y": 3,
          "w": 1,
          "h": 1
        },
        {
          "id": "c16",
          "x": 0,
          "y": 4,
          "w": 1,
          "h": 1
        },
        {
          "id": "c17",
          "x": 1,
          "y": 4,
          "w": 1,
          "h": 1
        },
        {
          "id": "c18",
          "x": 2,
          "y": 4,
          "w": 1,
          "h": 1
        }
      ],
      "orderChains": [
        [
          "c12",
          "c13",
          "c3"
        ],
        [
          "c16",
          "c1",
          "c14"
        ]
      ]
    },
    "author": [
      "c8",
      "c12",
      "c16",
      "c17",
      "c13",
      "c9",
      "c10",
      "c6",
      "c5",
      "c4",
      "c0",
      "c1",
      "c2",
      "c3",
      "c7",
      "c11",
      "c15",
      "c14",
      "c18"
    ],
    "witnesses": [
      {
        "constraint": "order:0:0",
        "path": [
          "c13",
          "c17",
          "c16",
          "c12",
          "c8",
          "c9",
          "c10",
          "c6",
          "c5",
          "c4",
          "c0",
          "c1",
          "c2",
          "c3",
          "c7",
          "c11",
          "c15",
          "c14",
          "c18"
        ]
      },
      {
        "constraint": "order:0:1",
        "path": [
          "c18",
          "c17",
          "c16",
          "c12",
          "c8",
          "c9",
          "c10",
          "c6",
          "c5",
          "c4",
          "c0",
          "c1",
          "c2",
          "c3",
          "c7",
          "c11",
          "c15",
          "c14",
          "c13"
        ]
      },
      {
        "constraint": "order:1:0",
        "path": [
          "c0",
          "c4",
          "c8",
          "c12",
          "c13",
          "c9",
          "c10",
          "c6",
          "c5",
          "c1",
          "c2",
          "c3",
          "c7",
          "c11",
          "c15",
          "c14",
          "c18",
          "c17",
          "c16"
        ]
      },
      {
        "constraint": "order:1:1",
        "path": [
          "c16",
          "c12",
          "c8",
          "c4",
          "c5",
          "c6",
          "c10",
          "c9",
          "c13",
          "c17",
          "c18",
          "c14",
          "c15",
          "c11",
          "c7",
          "c3",
          "c2",
          "c1",
          "c0"
        ]
      }
    ],
    "basePathCount": 544,
    "attempt": 26,
    "breakdown": [
      "c12 先于 c13，作者步号 2<5",
      "c13 先于 c3，作者步号 5<14",
      "c16 先于 c1，作者步号 3<12",
      "c1 先于 c14，作者步号 12<18"
    ],
    "keyFork": {
      "step": 1,
      "correct": "c8",
      "tempting": "c13"
    },
    "reason": "标记次序不符",
    "review": "自动验证通过；难度与人类推理顺序待真人试玩确认"
  }
]