FA-83275 / Go territory scoring / Member archive

Diagonal stones count as distance one · case 05

Estimated territory extends diagonally past the intended shape.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

Input [board, reach]. Each empty point belongs to the colour of the strictly nearest stones by Manhattan distance, provided that distance <= reach; ties between colours or no stone in reach leave it neutral. Return [black_points, white_points].

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
estimate case 0	`[5, 1]`	`[6, 1]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

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

Member access is invitation-based. Sign in with your invited account to inspect the sources.