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Kanazawa Solution 85
Path: KanazawaSolutions · Prev: KanazawaSolution84 · Next: KanazawaSolution86
Keywords: Problem
Main line & variations: unkx80, Dieter SolutionThe solution of this problem relies on the rule that a board position can not be repeated.
Black 1 threatens to connect along the upper side (see variations). Then he threatens to make a living shape with 3, forcing White 4. Follows the awkward play at 5, needed to prevent a deadly bulky five. White must capture to prevent a lively bent four.
Black 7 recaptures, recreating an earlier board position. White would like to play at a BUT she is not allowed. Can someone explain why Black can do it and white can't. Probably has something to do with the difference between positional ko and superpositional ko...
What if White makes the Bulky five nonetheless. Isn't this ko? No, it isn't: Black has two outside liberties, enabling him to atari all White's stones. If White connects at the marked spot with 8 instead, she creates a living 7 point eyespace inside Black's group.
If White prevents the situation at the side, Black connects along the upper side this way or ...
... this way, making miai of a and b. See also: Path: KanazawaSolutions · Prev: KanazawaSolution84 · Next: KanazawaSolution86 This is a copy of the living page "Kanazawa Solution 85" at Sensei's Library. ![]() |