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Kanazawa Solution 21
Path: KanazawaSolutions · Prev: KanazawaSolution20 · Next: KanazawaSolution22 Authors:
Main line: Hashimoto Utaro, 9p
White plays kikashi before living with 1, and then occupies the vital point with 3.
BillSpight: The point about kikashi is rather subtle. There is a, well, grosser reason for White to play the hane first. It is actually a kind of probe, getting Black to commit to the connection. If White plays the 2-1 first,
Black makes an approach ko for the life of the group. Before winning the ko, Black has to connect the marked stones. Playing a provides three local ko threats for White.
Assuming White knows the concept of playing kikashi before living, she may still fail to see the vital point. Black 4 makes miai of a and b.
Here too, White misses the vital point. Black 4 makes miai of a and b.
Go to Problem 22 Path: KanazawaSolutions · Prev: KanazawaSolution20 · Next: KanazawaSolution22 This is a copy of the living page "Kanazawa Solution 21" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |