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KanazawaProblem38

 

Kanazawa Solution 38
Path: KanazawaSolutions   · Prev: KanazawaSolution37   · Next: KanazawaSolution39
    Keywords: Life & Death, Problem

Authors:

Main line: Hashimoto Utaro 9p
Variations: HolIgor, DieterVerhofstadt 1k

[Diagram]
Main line


[Diagram]
Variation 1: an eye in the corner

If Black answers at B2, White has W3 to make miai of a and b for life.


[Diagram]
Variation 1a (continuation)

Demonstration of W5 giving two eyes.


[Diagram]
Slightly worse

White can also live by playing at W1. Black removes the aji with B2 and gets two points more compared to variation 1a.


[Diagram]
Slightly worse 2

If White starts here, then a sequence similar to Variation 1a makes Black one point better off. Looking back at 1a, it would be as if White afterwards exchanged W1 for B2, which effectively gives away 1 point.


[Diagram]
Wrong

White must be very careful not to play W3 in reply to B2, because B4 kills her.


[Diagram]
Variation 2

What about Black playing the monkey jump right away?


[Diagram]
Variation 2 (continuation)

White cuts at W3 and after W9, Black can't play at a because of shortage of liberties. By the way, W3 at B4 would be a mistake.


[Diagram]
Mistake in Variation 2


Problem 39



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This is a copy of the living page "Kanazawa Solution 38" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.