FA-83102 / Go territory scoring / Member archive
Chains grow through adjacent opponent stones · case 02
A contact fight reports one merged chain with the liberties of both sides.
Case contract
Input [board, row, col]. Return [colour, chain_size, distinct_orthogonal_empty_liberties]; an empty point gives [".", 0, 0].
Why this case matters
Go servers and scoring tools compute this value automatically; a wrong answer changes a game result.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| chain case 0 | ["W", 13, 10] | ["W", 6, 4] | Failed |
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