RTG Problem 16 / Solution

Sub-page of RTGProblem16
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Solution

Black must cut at B7. After W8, B9 starts the two stone edge squeeze tesuji.

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Solution (3 at circled stone, 4 at squared stone, 6 at circled stone)

After B7, Black wins the capturing race by one move.


[Diagram]

Solution

Since the given sequence is a joseki, there is of course no problem with B1 and B3.

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Solution (5 at circled stone, 6 at 1, 8 at circled stone)

Because even when Black applies the two stone edge squeeze, White still wins the capturing race by one move.


[Diagram]

Solution

The solution is to crawl one more time at W1, before jumping out at W3. And this is joseki.

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Failure

The reason is because if W1 jumps out too early, then B2 is a tesuji that makes a and b miai.

[Diagram]

Failure

If W3 defends on the upper side, then B4 and B6 captures the two White stones.

[Diagram]

Failure

If W3 saves the two stones, then B4 onwards can capture the corner.

[Diagram]

Failure (8 at 2, 9 at 4)

The two stone edge squeeze comes into play again.


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(OC) 2011 the Authors, published under the OpenContent License V1.0.
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