Beginner Exercise 230

  Difficulty: Beginner   Keywords: Life & Death, Problem

Recall that the L-group is dead, and no combination of hanes can help the L-group live.

[Diagram]
L-group  

This is a sequence given on the L-group page. If B1, then the combination of W2 and W4 kills. Note that the order of W2 and W4 can be interchanged.


[Diagram]
L-group  

In other words, W2 can play the hane first as shown in this diagram to kill.


[Diagram]
Problem  

When there are the black+circle stones, then W2 and W4 still kills. The question is: is the order of W2 and W4 interchangable?


[Diagram]
Problem  

That is, can White play W2 to kill?

/Solution



Beginner Exercise 230 last edited by 129.13.72.197 on June 27, 2009 - 13:47
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