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Beginner Exercise 54 Discussion
The marked space is only good for one eye with white's stone placed as it is. White must prevent black from making two eyes immediately with a play at 1, so the first move is obvious.
If black tries to solidify an eye on the bottom, white 3 is double atari and will capture and destroy an eye, leaving black dead. unkx80: Apart from HolIgor comments below, think also how black 2 should defend. If you play black 2 as in your diagram, white 3 can tenuki, that is, black 2 actually dies in gote. You mean the diagram beside this text I assume? It seems that if white 3 tenuki, black 4 at 3 makes an eye out of the space at the top, and the four in a row on bottom should make a second eye, with white unable to connect the stranded stone. unkx80: Yes, I mean the diagram beside this text. Hint: See also my comment below.
If black tries to solidify an eye at the top, white 3 will cut, putting the marked stone in atari. Black cannot connect at 'a' due to damezumari, and will not be able to make an eye on the bottom. HolIgor: If black 4?
Oops. How about this way? White must be careful not to fill in at move 7, since black 8 at 7 would capture. Black 4 and 6 can be interchanged. After black captures 2 stones... unkx80: Actually white 5 can tenuki.
... White recaptures and black has no eye on bottom.
This is a copy of the living page "Beginner Exercise 54 Discussion" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |