# Endgame Problem 9 / Solution

Sub-page of EndgameProblem9

### The informal analysis

Solution

is the solution, not a.

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.

Variation

does not work either. Black loses even more this way.

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

Almost sente

Bill: - is fairly large, about 8.7 points.

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.

The count in this end position is -1 for the captured stone. White at would forestall 2 points and then create a ko to capture first in sente. So is a 2 1/3 sente. White at would forestall 3 points (and no more if Black is komaster), so is a 3 point sente

Large gote

Here the count is 8

%
%

Game tree

```            3.5 (4.5)
/   \
8   -1 (3)
/ \
(-2 -1/3) -1  -4
/ \
-1  -3 -1/3
```

Endgame Problem 9 / Solution last edited by Dieter on June 20, 2023 - 18:10
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