Gokyo Shumyo, Section 2, Problem 4 / Attempts

[Diagram]
 

xela: White 'a' next and black is short of liberties.

  • This in my opinion refutes B 15 as white's response, but then again so does C 17. I do believe this is the correct first move, but we need a correct 'main line' to go into the solution. Here's what I've got:
[Diagram]
 


White can play 6 at 7 of course, but then he has a problem:

[Diagram]
White can't push from either direction  


Other responses look equally bad:

[Diagram]
White can't push  


Black's best resistance is with C18 in my opinion, but nothing seems to work against white B 18.

[Diagram]
 

--gnostic?


White's 1 move is the key. Black then may respon with any number of moves, but it is futile if played correctly.

[Diagram]
corner  

Other moves.

[Diagram]
corner  
[Diagram]
corner  
[Diagram]
corner  

LukeNine45: This is ko after Black at a next, no? Can you refute the solution given at attempts?


LukeNine45: Also what are the refutations to the two natural responses?

[Diagram]
corner  
[Diagram]
corner  

Gokyo Shumyo, Section 2, Problem 4 / Attempts last edited by gnostic on January 27, 2014 - 14:47
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