Xuanxuan Qijing Problem 333 / Solution

Solution

[Diagram]
Solution  

W1 kills.

After W1, both eyes at around x and y are gote eyes;

White will be able to destroy one of them.

Eye 'x'

[Diagram]
(W2 at around y)  

White can destroy the eye around here.

[Diagram]
(W5 at W3)  

B4 is to prevent snapback.

Black can't make this eye in sente.

If B2 is at r, W3 is at B2.

Eye 'y'

[Diagram]
(B2 at around x)  

White can destroy this eye.

[Diagram]
 

Black can't make this eye in sente.




Failure

[Diagram]
 

Two eyes (around x and y).

[Diagram]
 

The black group has another eye at around x or y.

[Diagram]
 

Two eyes (around x and y).

[Diagram]
 

W1 or W1 at r are moves to help one's opponent.


Xuanxuan Qijing Problem 333 / Solution last edited by Unkx80 on July 5, 2008 - 21:50
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
RecentChanges
StartingPoints
About
RandomPage
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Goproblems.com
Login / Prefs
Tools
Sensei's Library