Xuanxuan Qijing Problem 293 / Attempts

Table of contents

[Diagram]

Solution

W1 captures the black stones.



Solution (Part 1)

[Diagram]

If Black plays B2 elsewhere, W3 at B2 captures black+circle.

For information on W1 at another place, see Failure (Part 1)

[Diagram]

B6 and B8 are forcing moves to help Black move out a little faster.

[Diagram]

(B12 at white+circle)



Solution (Part 2)

[Diagram]

For information on W13 at another place, see Failure (Part 2)



Solution (Part 3)

#toc4 #toc6 #toc5
[Diagram]

B22 at a is normally considered to be the mainline solution of this problem.

B22 at b and c are pretty interesting, too.

For information on W21 at another place, see Failure (Part 3)


Solution (Part 3) Resistance 'a'

[Diagram]

B24 at x would be a transposition to the variation in Resistance 'b'

[Diagram]


Solution (Part 3) Resistance 'b'

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Solution (Part 3) Resistance 'c'

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(B40 at W37)

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Failure (Part 1)

[Diagram]

This part is about W1 other than this solution move.

[Diagram]

Since after B2, the black chain has 5 liberties.

The only possible W1 (other than the solution move or silly kikashi) would be at one of the x, or white+circle gets captured.

[Diagram]

[Diagram]

For the other W1, after B4, the black chain has 5 liberties.



Failure (Part 2)

[Diagram]

This part is about W1 other than this solution move.

[Diagram]

If White wants to keep the black chain's liberties less than 5, White needs to play on nose points like W3, W7, and W9.

This turns into a ladder that doesn't work.

[Diagram]

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Next Black has x or y.

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Failure (Part 3)

[Diagram]

This part is for W1 other than this solution move.

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char: What is the good move to save Black after W11 at x?

After all these variations, I can't think anymore =(

[Diagram]

unkx80: B4 threatens a ladder. After B8, likely White needs a move at a, so Black should win the capturing race.

char: Thank you for renaming the page and the variation.

If anyone else is looking at this, trust me, unkx80 knows everything =P


This is a copy of the living page "Xuanxuan Qijing Problem 293 / Attempts" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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