Gokyo Shumyo, Section 1, Problem 81 / Solution

Main line: Hashimoto Utaro
Variations: unkx80, Dieter

Solution

[Diagram]
Main line  

This is what the book provides as the main line. White 7 makes miai of a and b.

[Diagram]
Variation at 4  
[Diagram]
Var at 4 (ctd): Seki  

Black can only almost fill White's eyespace with bent four or twisted four. These are living shapes. The result is seki. Black a is sente.

[Diagram]
Variation at 2  

The points marked a are miai. So are the points b and the points c.White is alive.


Failures

[Diagram]
Variation at 2: failure  

If White 3 to Black 2, the monkey jump to 4 destroys the eyeshape

[Diagram]
Variation at 2: failure  

Another wrong answer to Black 2. a and b are miai for the kill.

[Diagram]
failure  

10@a makes ko.


Gokyo Shumyo, Section 1, Problem 81 / Solution last edited by 68.99.65.50 on July 17, 2012 - 08:19
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