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Beginner Exercise 21 Solution
Black is caught in connect-and-die. If black 'a', white 'b' captures. Otherwise, white captures at a, and is connected to the outside and escapes, thus living (by tsumego convention).
The double atari is wrong here: black chooses which group to sacrifice, preventing white from connecting and escaping. Note the the bottom row of four is good for at most one eye. After white captures (perforce; if white tries to start making an eye below, black will capture and white only gets one eye), black reduces that to no eyes with the double hane:
White again has only one eye. See Also:
This is a copy of the living page "Beginner Exercise 21 Solution" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |