FA-83218 / Go territory scoring / Member archive

A one-rank gap is given a one-stone handicap · case 03

Adjacent ranks receive a stone instead of a no-komi game.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Input [rank_a, rank_b] as Nk (1..30) or Nd (1..9); 1k and 1d are one rank apart. Equal ranks -> [rank_a, 0, 65]; one rank apart -> [weaker, 0, 5]; otherwise [weaker, min(diff, 9), 5]. Invalid ranks -> "invalid". The first element is the player taking black.

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 fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
handicap case 6	`["2k", 1, 5]`	`["2k", 0, 5]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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