Resolved (not bug) Bug Report – Group Not Captured After Liberties Were Removed

Dear OGS team,

I’m reporting a possible bug that occurred during a game. On the second-to-last move, I (playing white) played at J7, which should have captured a group of black stones that had no remaining liberties.

However, the system did not register the capture. The black stones remained on the board, and black was even able to play J6 on the following move, which should not have been possible.

I believe this is a system failure in detecting the capture properly. I’ve attached the SGF file for your review. The issue happens on the penultimate move (White at J7).

Thank you for looking into this!

74080405-045-j.v.a.ramalho-bossnyoda300.sgf (631 Bytes)

Is this the game?

Because if so, B is not out of liberties.

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You can directly link to the game : bossnyoda300 vs. j.v.a.ramalho

But I don’t see a bug. J7 doesn’t capture, black still has liberties.

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In case you are still confused after the above two replies, I have marked the 3 liberties black still had on the first line on the picture below.

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So m4 was because you incorrectly thought you were in atari. The lines of the board are liberties, including the edge line.

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