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Auto-atari
To put your own stones in atari
From the CranesNestTesuji. The circled spot is the last liberty of the chain of 5 Black stones surrounding it. If Black wants to protect his stones from being captured ...
He creates a lump of 7 stones, which still have only one liberty left. Thus Black has put his own stones into atari: next, White will capture them all at 'a'.
DougRidgway? -- In the example above, the black stones were already in atari, so the mistake doesn't change much. Here's an example from one of my games where the consequences should have been more severe. Black played at the marked point. I was white, too bad I didn't spot the atari.
Here's another one. White has lots of good responses to Black 1 (consider A, for instance, or perhaps tenuki). What is the pessimal choice?
This was where I played. --DougRidgway? This is a copy of the living page "Auto-atari" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |