Beginner Exercise 208 / Solution

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I think it might be easier to present the failure diagrams first. There are two main failure diagrams.


Failure (4 at marked stone)  

If B1, then W2 destroys the eye. Capturing at B3 only allows W4 to kill by a throw-in that leads to a false eye.


With the above failure diagram, it is now easy to explain this failure diagram. B1 here is greedy, and W2 is the correct way to kill. It transposes back to the previous failure diagram.

Note that W2 must not be played at a, which I leave as an easy reading exercise.



Descending at B1 is the correct solution. If W2 tries to remove the eye, then B3 and B5 captures three stones and makes the eye.


W6 and B7 are miai for life, so Black lives.

Main line  

The main line is this diagram. W2 connects and allow B3 to live, and both parties are happy. This should be what is played in real games.

Beginner Exercise 208 / Solution last edited by P7A77 on February 7, 2005 - 22:20
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