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Re: [gnugo-devel] missed trivial move
From: |
Gunnar Farnebäck |
Subject: |
Re: [gnugo-devel] missed trivial move |
Date: |
Tue, 18 May 2004 02:35:19 +0200 |
User-agent: |
EMH/1.14.1 SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.3 Emacs/21.3 (sparc-sun-solaris2.9) MULE/5.0 (SAKAKI) |
Yitzchak wrote:
> The attached game is gnugo 3.4 playing
> against itself.
>
> At move 168 black and white both pass,
> and gnugo reports the result as B+4.5.
> But white has the obvious move of r3
> to win the game.
I'm afraid you're misreading. This is the position,
A B C D E F G H J K L M N O P Q R S T
19 . . O O O O O X X X O . . . . . . . . 19
18 . . O X O X O O O X X X . . . . . . . 18
17 . . O X X X X X O X . . X . . . . X X 17
16 . . . O O X O X X + . . . . . X . X O 16
15 . . . O X X O O X X . X X X . . X O O 15
14 . . . O O O . O X . O X . . X X O O . 14
13 . . . . . . . O X . O X X X X X X O . 13
12 . . . O . . . O X X X O O O X X O . . 12
11 . . . . . . X O O O O . . O O O O . . 11
10 . . O + O O O . . O . . . . . + . . . 10
9 . . . . . O X O O X O O O O . . . . . 9
8 . . . . . O X X X X X X X X O . O O . 8
7 . . . . O X X . . . . . . X O . . . X 7
6 . . O O X X . . . . . . X X X O . O O 6
5 . . . O X . . . . . . . X O O O O O X 5
4 . . . O X . . . X + . . . X X O X X X 4
3 . . O X X X . . . . . . . . X X . . . 3
2 . . O X . X . . . . . . . . . . . . . 2
1 . . O O X . . . . . . . . . . . . . . 1
A B C D E F G H J K L M N O P Q R S T
After white R3, black S3, white R2, black S2 we have
8 . . . . . O X X X X X X X X O . O O . 8
7 . . . . O X X . . . . . . X O . . . X 7
6 . . O O X X . . . . . . X X X O . O O 6
5 . . . O X . . . . . . . X O O O O O X 5
4 . . . O X . . . X + . . . X X O X X X 4
3 . . O X X X . . . . . . . . X X O X . 3
2 . . O X . X . . . . . . . . . . O X . 2
1 . . O O X . . . . . . . . . . . . . . 1
A B C D E F G H J K L M N O P Q R S T
and there's nothing white can do.
/Gunnar