BQM578/Attempt

Sub-page of BQM578

RhysD: Here is my attempt.

[Diagram]
Black begins; all moves forced.  

The following parenthetical comment is wrong, considering fractic's comments below. (Actually, W4 should be saved as a ko threat; white is already dead.)

[Diagram]
White must capture  
[Diagram]
Black's throw-in is atari; black wins  

fractic: Not so fast, White can play under the stones too.

[Diagram]
White keeps going  
[Diagram]
White keeps going  

fractic: White gets a ko like this. The In a Korean baduk school page has a link to the actual solution.

Slarty: Nooooooo....

[Diagram]
If black captures four stones, White lives  

In the second diagram, if black captures the four white stones immediately, he fails; white takes the corner with an under the stones tesuji.


Dave: I think Black has to increase the sacrifice to yield a better shape.

[Diagram]
White has to answer around 2 to prevent Black's escape  
[Diagram]
White is helpless against the placement at 5  
[Diagram]
The ko idea no longer works for White  
[Diagram]
The ko idea no longer works for White  

BQM578/Attempt last edited by DaveSigaty on April 23, 2013 - 15:17
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