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BQM1

 

BQM1 solution
  Difficulty: Advanced   Keywords: Life & Death, Tesuji, Problem

[Diagram]
Black can kill

Black can kill; and the point to start the attack is the obvious a.


[Diagram]
Main line

When White plays atari at W4, Black faces the choice of connecting at WC or connecting at a.



1. Correct solution: under the stones tesuji

[Diagram]
Correct solution

Connecting at B5 is correct. After White captures at W6 ...


[Diagram]
White is dead

... she is left with a bulky five shape and B7 kills her right away. This is a nice example of playing under the stones.


[Diagram]
Shape

The important thing to see in this shape is the "hidden" bulky five shape of the BC stones.



2. Failure: ko

[Diagram]
Failure

When Black connects at B5 he allows White to make a twisted four in the corner eye shape.


[Diagram]
Ko

Nevertheless, Black can get a ko out of it by playing as shown.



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This is a copy of the living page "BQM1 solution" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.