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2008-01-13
Problem diagram.
Black plays.
Source:
Go World #38, Winter 1984-85, p. 52
Tesuji problem, Yasuda Yasutoshi 4p
Solution follows
(or click here to download SGF)
Horrible.
Black 1 is a disaster. White simply descends to 2 to force
Black to connect at 3. White 4 links up to destroy Black's corner.
See the SGF for an even better line for White depending on the
balance of ko threats.
Correct.
Black 1 takes the key point. The best that White can do is
to capture a stone at 2. But then Black 3 saves most of the corner.
Compare this position with the previous one.
White variation.
White 2 is too greedy. After Black makes simple forcing
moves through 9, White dies.
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