Beginner Exercise 91 / Solution

Sub-page of BeginnerExercise91

Solution

[Diagram]

Solution

It is important to atari the white+circle stone in the correct direction.

If W4 here, then after B5, the W4 stone is captured.

[Diagram]

Variation

This is even easier for Black.

[Diagram]

Variation

W2 here is a trick move, but after B3, White is still dead.



Failure

[Diagram]

Failure

The play from the other direction is a failure. White lives.

[Diagram]

Under the stones - wishful thinking

Players who know the under the stones technique may be tempted to think of this more convoluted solution. (Note the tesuji of W4 that forces Black to make an additional approach move.) Alas, this line is wishful thinking - see Under The Stones Problem 6 for the reason why it doesn't quite work.

% NecRock's diagram commented out to avoid confusion for beginners.
% They can click on the link above if they want the gory details!
%EagleHelm: I don't see why the above diagram fails.
%
%NecRock: I think this is the optimistic diagram Black is hoping %for. White would rather play W6 at W8, which Black has to %respond to with B7 at W6 to avoid getting the stones he's trying %to play under getting captured prematurely.
%
%$$B [Under the stones] - fails
%$$ --------------------
%$$ | . 1 3 6 7 8 . . . .
%$$ | 2 W X X O 9 X . . .
%$$ | . X O O O X . X . .
%$$ | . X O , O . X . . .
%$$ | . 4 X O O X . . . .
%$$ | . 5 X X X X . . . .
%$$ | . . . . . . . . . .
%$$ | . . . . . . . . . .
%
%White sets up a ko fight.


This is a copy of the living page "Beginner Exercise 91 / Solution" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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