Xuanxuan Qijing Problem 60 / Solution

Solution

XuanxuanQijingProblem60/Solution#toc2 XuanxuanQijingProblem60/Solution#toc3
[Diagram]
Solution  

W1 kills.

If W1 escapes, the black group doesn't have enough eye space.

Therefore, we will only consider the case when B2 is at a or b.


Resistance 'a'

[Diagram]
 

B4 prevents W1 and W3 from escaping

[Diagram]
Cont. 1  

B6 can't be at W7 due to shortage of liberties.

[Diagram]
Cont. 2  


Resistance 'b'

[Diagram]
 

After W3, the five black+circle are dead.




Failure

[Diagram]
(W1 can also be at r)  
[Diagram]
(W1 can also be at r or s)  
[Diagram]
(W1 can also be at r)  

Xuanxuan Qijing Problem 60 / Solution last edited by Unkx80 on July 5, 2008 - 21:39
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