[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Referenced by
OneDay1Problem
July28Problem
July28Solution1

 

July 28 Solution 2
    Keywords: Problem

[Diagram]
Diag.: Black first, White dies

We shall start off from 1 instead...

The solution is presented below. :-)

Discussions welcome.

--unkx80


[Diagram]
Diag.: Tesuji

BillSpight: Black 3 is tesuji, but White 4 makes a and b miai for a second eye. This is a diagram in the Sekiyama book to show that Black 1 is a mistake.

However, it looks like the zokusuji (vulgar play) works.



Solution!!!

[Diagram]
Diag.: That very interesting tesuji!

[Diagram]
Diag.: Variation 1 (a)

If Black 7 is played at 9 instead, then White takes the stone at 7 and it becomes a ko. (7 at 10 produces another ko; I've added it as "Variation 1 (c)" below. Erase or embed as you feel --Dieter)


[Diagram]
Diag.: Variation 1 (b)

After the placement at 1, a and b are miai. White is dead.


[Diagram]
Diag.: Variation 1*: Ko (added by Dieter)

If 6 as marked, then 7 at a. It is a ko.


[Diagram]
Diag.: Variation 2 (a)

[Diagram]
Diag.: Variation 2 (b)

(Black 3 at marked stone)

With Black 3, white dies with a farmer's hat big eye.


[Diagram]
Diag.: Variation 3

This variation reverts to Variation 1.


[Diagram]
Diag.: Finally

Finally, White's resistance at 2 is useless. Black 3 descendss, and a and b are now miai.

--unkx80



This is a copy of the living page "July 28 Solution 2" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.