The round accidentally ran every level twice, which turned into the most useful
thing it produced: 45 retest pairs on this exact set. 84% of them replayed the
identical action sequence, so the agent is near-deterministic and a second run
of a level buys almost nothing — the mechanical metrics retest at r = 1.00 for
that reason, not because they survived a hard test.
The ratings do not. Difficulty retests at r = 0.55 here, against the 0.93 this
project had on record from a smaller sample, and every pair that disagreed had
played the same trajectory: same moves, same outcome, different number. The
report now prints the reliability it measured rather than quoting the older
figure, and says which one it replaces.
Averaged by band over ~20 runs, though, the ratings finally track the curve —
2.00 / 2.05 / 2.40 with stuck at 1.21 / 1.15 / 1.74, where round 1 was a flat
line. So the rule is not "ratings are useless", it is "ratings are a band
statistic, never a per-level rank", and that is what the rules section says.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Round 1 played all fifty levels and came back with the mechanics clean and one
complaint repeated across the reports: 短暂以为转错了方向 — a turn that changed
nothing. That one is mechanical rather than perceptual, so it can be gated.
The first attempt gated `doubleDead`, and it was wrong. That counts dead states,
which scales with the state space: three-turn levels have ~187 reachable stuck
states and five-turn ones ~739, so a raw count made deep levels look eight times
worse when the rate is 2% against 5%. It would have erased every level past
three turns — the opposite of the brief, where turning is the signature and is
not to be rationed. The gate is `maxDeadTurns`, the longest run of turns before
something opens, at 1: one beat of suspense, then a release. Eleven of the fifty
shipped at 2.
Selection could not express the curve either. Spreading picks evenly over the
ranked pool returns whatever the pool is made of, and the pool is 88%
three-turn, so no weighting moved the distribution off {3: 46}. A quota per
depth states the curve outright, deepest first so the scarce end picks before a
family cap is spent on levels the shallow end has hundreds of.
Same rule bot, both sets: blind rotations 0.24 → 0.12, worst blind streak 4 → 1,
decisions unchanged at 10.3. The same amount to do, half the wasted motion.
Rotation now runs 1.8 / 3.0 / 4.1 across the bands against 1.8 / 3.0 / 3.5.
Verdicts are keyed by the board rather than by its id, because a reselect
re-issues ids from the ordinal and `c50-01-v05` is not the same board before and
after — the review sheet was one reselect away from printing one level's verdict
under another's thumbnail.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
