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Tsumego From Games 2
This one could also be classified under "How to kill your own stones ?" In this lightning game White made an attempt to kill the corner, that was successful but should not have been.
Already, the 1-2 exchange was not so good. But black can still live.
Black takes two stones, and White recaptures at 4, making miai of A and B, killing the corner. This was how he had imagined things when he played 2, but he overlooked a Black alternative.
If Black doesn't capture the two stones, he leaves them in damezumari. Now he can play at 3. White 4 prevents Black making two eyes, and Black ataris at 5. White can't cover at A because of the existing damezumari. In the failure diagram, which was also the game, Black himself resolves the White damezumari and thereby kills his own stones. Incidentally, the same game featured another standard tsumego.
Black thought he could kill White. He can not. This is a copy of the living page "Tsumego From Games 2" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |