OD1P - July 28 Problem / Solution2
![[Diagram]](../../diagrams/25/22d79e766d4ca3ee46535cd7e94064c3.png)
Black first, White dies
We shall start off from
instead...
The solution is presented below.
Discussions welcome.
--unkx80
![[Diagram]](../../diagrams/51/ce296da5e7d7cc201c238f82b208c231.png)
Tesuji
BillSpight:
is tesuji, but
makes a and b miai for a second eye. This is a diagram in the Sekiyama book to show that
is a mistake.
However, it looks like the vulgar play works.
Solution!!!
![[Diagram]](../../diagrams/15/3847cf66717c0e1aacf70c19ef96051b.png)
That very interesting tesuji!
![[Diagram]](../../diagrams/44/b050206716bb82db7c1064e907f47178.png)
Variation 1 (a)
If
is played at
instead, then White takes the stone at
and it becomes a ko. (
at
produces another ko; I've added it as "Variation 1 (c)" below. Dieter)
![[Diagram]](../../diagrams/30/c5206eb673551ef39c7a94362a2ce01b.png)
Variation 1 (b)
After the placement at
, a and b are miai. White is dead.
![[Diagram]](../../diagrams/10/cec994c3a4fb2a69a1d6a082d5eab1a2.png)
Variation 1*: Ko (added by Dieter)
If
as marked, then
at a. It is a ko.
![[Diagram]](../../diagrams/24/9f69ef9eff5b97f768057dad033b7dc9.png)
Variation 2 (a)
![[Diagram]](../../diagrams/46/837f1476ac28e0f0b447c01dc0c4093f.png)
Variation 2 (b)
(
at
)
With
, White dies with a farmer's hat eye shape.
![[Diagram]](../../diagrams/29/35c39d134a704eb4c5f2009f5dd98978.png)
Variation 3
This variation reverts to Variation 1.
![[Diagram]](../../diagrams/27/fc7085483d4b2727f84ceba89e3c61c8.png)
Finally
Finally, White's resistance at
is useless.
descends, and a and b are now miai.
--unkx80