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. W7 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 W3 to B2, the monkey jump to B4 destroys the eyeshape.

[Diagram]
Variation at 2: failure  

Another wrong answer to B2. a and b are miai for the kill.

[Diagram]
failure  

Ko.


Gokyo Shumyo, Section 1, Problem 81 / Solution last edited by hnishy on January 26, 2023 - 03:11
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