Gokyo Shumyo, Section 1, Problem 78 / Solution

We try it out at Gokyo Shumyo, Section 1, Problem 78 / Attempts.


The solution is copied over from Gokyo Shumyo, Section 1, Problem 78 / Attempts, with minor corrections.

Main line: Hashimoto Utaro
Variations: unkx80, Dieter

[Diagram]

Solution.

The tesuji is White 1.


Hashimoto's main line:

[Diagram]

Main line

White 11 at a and Black 12 can't play at b because White captures three in a row, assuring a second eye.


Variations

[Diagram]

Variation 1.

This lives. Covered in Beginner Exercise 56 and Beginner Exercise 58.

[Diagram]

Variation 2 (Main Line).

The next tesuji is White 3, sacrificing yet another stone.

[Diagram]

Variation 2a.

[Diagram]

Variation 2b.

[Diagram]

Variation 2c.


Failures

[Diagram]

Failure 1

If White fires off the usual sequence first only to play the former tesuji at 7, she falls short as a is now suicide.



This is a copy of the living page "Gokyo Shumyo, Section 1, Problem 78 / Solution" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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