Endgame Problem 9 / Solution
The informal analysis
![[Diagram]](../../diagrams/50/efa8aa3de1633b1398ff4c07e9ee8e89.png)
Solution
is the solution, not a.
![[Diagram]](../../diagrams/40/7e409f348d3b1012ee41d30cefe028d9.png)
Solution
What is so painful for Black is that
is practically a sente move during the endgame phase. After
, then White can tenuki, so White has reduced Black's territory in sente.
![[Diagram]](../../diagrams/39/dece1677493a68a00a7ccd694ec690e7.png)
Variation
does not work either. Black loses even more this way.
![[Diagram]](../../diagrams/19/77dc320d11f60b7c4c809956d4f47c55.png)
Failure
is considered a failure in this problem. After
, if White saves the two stones at a, then it is gote. Nothing more than an itch for Black.
The more formal analysis
![[Diagram]](../../diagrams/38/e0a4f6ad2ec143568b8e8cc6da85aef8.png)
Almost sente
Bill:
-
is fairly large, about 8.7 points.
![[Diagram]](../../diagrams/37/4746a1d2681a8d5f3458cfeb7fc78573.png)
Large gote
connects at
.
is almost as large, about 8.4 (8.5 points when White is komaster). So White will often be able to play here with sente.
Later
-
is sente, and even later
-
is sente.