RTG Problem 28 / Solution

Sub-page of RTGProblem28

Modified problem

[Diagram]

Solution.

The 1-2 point is the key in the solution.

[Diagram]

Solution (variation).

If W2 here, then Black can play B3 and B5 and capture White due to shortage of liberties.

[Diagram]

No ko.

W4 attempts to set up a ko fight. However, B5 connects to the BC stone and there is no ko.

[Diagram]

Reference.

B1 and B3 lives too, but loses one extra stone.

[Diagram]

Failure.

B1 and B3 is greedy. After W4 makes the large monkey jump, Black dies of a straight three dead shape.

[Diagram]

Failure.

B1 here cannot live. W2 simply plays a honest move, and Black is a L-group dead shape.



Original problem

[Diagram]

Dead I.

Because Black lack outside liberties, W4 is possible. If B5 blocks, then W6 onwards cause Black to be trapped in a double damezumari.

[Diagram]

Dead II.

If B1 first, then the clamp at B2 is tesuji which kills.


This is a copy of the living page "RTG Problem 28 / Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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