Xuanxuan Qijing Problem 146 / Solution



Solution

[Diagram]

Solution

W1 kills.

XuanxuanQijingProblem146/Solution#toc3 XuanxuanQijingProblem146/Solution#toc2
[Diagram]

Black's resistance

Black has an eye in gote by playing at x.

In a situation like this, Black has 2 choices.

  • Secure the gote eye with B2 at x.

In this case W3 at r kills.

  • Find the moves that if White reponds at x, Black can still make two eyes.

a and b are the only two moves that makes two eyes on the top, so those are what we try for B2.


Resistance 'a'

[Diagram]

Black can't make two eyes.


Resistance 'b'

[Diagram]

After W3, there is only a gote eye on the top.

Black r / white s exchange doesn't help.




Failure

[Diagram]

(W1 can also be at r or s)

[Diagram]

(W1 can also be at r)

[Diagram]

[Diagram]

(W1 can also be at r)

[Diagram]

(W1 can also be at r)

B2 tenuki.


This is a copy of the living page "Xuanxuan Qijing Problem 146 / Solution" at Sensei's Library.
(OC) 2014 the Authors, published under the OpenContent License V1.0.
[Welcome to Sensei's Library!]
StartingPoints
ReferenceSection
About