BQM 233

    Keywords: Question
Position at move 308  

Calvin: This is a game of Rui Naiwei 9d (W) vs. Chen Yaoye 3d (B) from the 2nd Cheongkwanjang Cup Hors Concours Match. The result is recorded as W+0.5, but when I finish the game, I get B+0.5. What am I missing? (Komi is 6.5, White has captured one more stone than black during the game.) White has just filled in a ko with W1.

Moves 309 to 314  

This is my attempt.

Moves 315 to 322  

I don't think there is anything left but dame, but when I count this I get B+0.5, not W+0.5. Perhaps white can force black to play at 'a' somehow if she plays 'b' earlier. Please help with the best endgame sequence here.

BQM 233 last edited by Dieter on July 5, 2008 - 12:48
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