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BeginnerExercise136

 

Beginner Exercise 136 Solution
    Keywords: Problem

[Diagram]
White to play.

mgoetze: With a throw-in, white can set up a double ko in which she will definitely capture something. Whenever Black plays a, White can play W1; if Black ever plays b, White will be able to capture at c or d.

Rich: If Black captures with b, d would be an illegal move...

mgoetze: Oh... mumbles something about sleep deprivation... well, uhm, at least it will be a good source of ko threats.

unkx80: The moves can be considered correct. To nitpick a bit, B4 can be played more profitably at a.

There is an alternative solution below, which may be better:


[Diagram]
Solution.

White plays W1, then a and b are miai. One good thing about this is that White does not have to sacrifice any stones prior to W1.


[Diagram]
Losing the ko.

In mgoetze's diagram, if B4 is played at BC, then White's loss when losing the ko is to the extent of B1. This will not happen in the solution diagram.



Back to Beginner Exercise 136.
Onward to Beginner Exercise 137.



This is a copy of the living page "Beginner Exercise 136 Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.