Lucky's Problem / Solution

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Sub-page of LuckysProblem

Original problem


W1 loosely surrounds the two black stones. The white+circle stone is in just the right place to prevent Black from pushing out along the right side.

Variation 1 (7 at 2)  

If B1, White plays W2 and squeezes Black. W10 completes a nice symmetrical shape.

Variation 2  

If B1, the standard reply at W2 stops Black cold.

Variation 3  

This B1 seems the most interesting, but it looks like the combination of W2 and W4 prevents Black from getting away. White has to be careful and connect at W6 against B5. Now Black is again short of liberties after W10. If next Black at a, White plays b.

Variation 4  

Against B5 and W7, W8 and W10 squeezes Black in the other direction.

Modified problem

The solution to the modified problem is the same as the original problem except...

Variation 1  

The only move here is W5, which may be a kind of a blind spot.


Compared to the original problem, W9 must be played here instead. Playing at a turns it into a ko.

See /Discussion for more.

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Lucky's Problem / Solution last edited by tapir on March 9, 2010 - 12:05
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