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  2007-02-12

Problem diagram.
White plays.

Source:
Tesuji , Ch. 5, pp. 81-82
James Davies, Ishi Press

Solution follows    (or click here to download SGF)






























Correct.
Making an ugly empty triangle with 1 is the only move that works! White 3 and 5 seal Black's fate.


Failure.
White 1 is an innocent looking mistake. Black 2 is a nasty surprise. After 5, White has to fight an unfavorable ko.


Black variation.
Perhaps White was hoping for the inferior Black 2? After 3, White takes the corner. Oh, if opponents would only do what you expected ...


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