Ko fight example from a pro game - 7

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Comment: still very much in discussion mode

unkx80: The following game between Takagi Shoichi (Black) and Lin Haifeng (White) may be an example. There is no commentary regarding the ko.

Moves 131 to 140  

unkx80: B9 cannot play at W10, or it will result in White a, Black b, White B9, resulting in a capturing race that Black cannot win.

Moves 141 to 150 (B7 at black+circle)  

unkx80: I guess that the aim of starting this ko is to get both W8 and W10 for compensation.

Moves 151 to 160  

unkx80: After the White cut, Black's framework at the bottom vanished in no time. B9 is needed to settle the large dragon.

Dieter: As a minor remark, I believe responding to B9 is much better than W10.

No ko  

Dieter: In order to understand the strategic concept, we must evaluate what happens if White does not use the ko. Suppose White kills locally, then B3 leaves bad aji, because a now is sente (small reading exercise). Or will B3 be played at b?

So I think part of the purpose of the ko was to eliminate the bad aji at the top, by forcing Black to play the threat at B5 (two diagrams ago).

unkx80: I don't claim to fully understand this game, but I suspect B3 will be played at b. Then when White cuts at B3, Black may give up the two stones.

Dieter: I understand the reasoning, but doesn't a clean capture of the upper left, as would happen if Black gives up the 2 stones, simplify the game even more?

Ko fight example from a pro game - 7 last edited by Dieter on January 17, 2013 - 18:20
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