OD1P - July 28 Problem / Solution2
![[Diagram]](../../diagrams/9/023ec9ee41d7388d1e7e68698740f165.png)
Black first, White dies
We shall start off from
instead...
The solution is presented below.
Discussions welcome.
--unkx80
![[Diagram]](../../diagrams/18/cef068985b6ee5996610d1a07eb15e31.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/24/05f91d02066a01d7cec39dc53163cdc2.png)
That very interesting tesuji!
![[Diagram]](../../diagrams/13/ba883d83cef9fa8a72337fb29cdc860b.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/18/98e43461ed588e37d0a88989c0eaaca4.png)
Variation 1 (b)
After the placement at
, a and b are miai. White is dead.
![[Diagram]](../../diagrams/33/31f78b2eaf3c3512a95f2757149854ef.png)
Variation 1*: Ko (added by Dieter)
If
as marked, then
at a. It is a ko.
![[Diagram]](../../diagrams/6/84ebecc15024066f625489e5332e3b99.png)
Variation 2 (a)
![[Diagram]](../../diagrams/18/9de8d5bd487194c70d91770bf78e6d1e.png)
Variation 2 (b)
(
at
)
With
, White dies with a farmer's hat eye shape.
![[Diagram]](../../diagrams/48/3f9b96a93f0f48da464e4704a366d0f9.png)
Variation 3
This variation reverts to Variation 1.
![[Diagram]](../../diagrams/29/353baae48be254b83730e258c2133664.png)
Finally
Finally, White's resistance at
is useless.
descends, and a and b are now miai.
--unkx80