RTG Problem 77 / Solution

Sub-page of RTGProblem77
[Diagram]

Solution

Black lives unconditionally after B1. This is the only move for life.

[Diagram]

Solution

If B2 cuts off the B1 stone, then B3 jumps. Subsequently, W4 must be answered with B5, which captures all the White stones. B5 at a would be a failure, which will be explained in the failure diagrams.

[Diagram]

Solution

The best White can do is to play at W2, allowing Black to make an eye at the bottom in sente with B5. Then B7 makes the second eye for life.

[Diagram]

Failure

The B1 and B3 combination is a failure.

[Diagram]

Failure

Up to W10, White lives with two eyes, and Black is unconditionally dead.

[Diagram]

Failure

The simple hane at B1 is met by the block at W2. Subsequently, a and b are miai for the kill.


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