Re: [gnugo-devel] Semeai test cases

[SP LEE]

> From: "SP LEE" <address@hidden>
> Reply-To: GNU Go development <address@hidden>
> To: address@hidden
> Subject: [gnugo-devel] Semeai test cases
> Date: Mon, 04 Aug 2003 13:28:11 -0700
>
>
> I have added 6 semeai test cases. It appears that when one of the dragon 
> has 3 point eye, gnugo can get the correct result, while for 4-5 point eye, 
> gnugo can't get correct result. I have not succeeded to find the reason of 
> the problem, but I did see gnugo didn't try until the last liberty, but 
> jumped to conclusion after owl_estimate_life.
>
> These cases are all on 9x9 board, so it's both easy for gnugo and people 
> who analyze them.
>
> SP Lee

Here is another case where gnugo doesn't try to fill liberties.
  A B C D E F G H J
9 . . . . . . . . . 9
8 . O . O . O . O . 8
7 . . O X . X O . . 7
6 O O X . X . X O O 6
5 O X X X X X X X O 5
4 O X . . . . . X O 4
3 O X O O O O O X O 3
2 O O X X X X X O O 2     WHITE (O) has captured 0 stones
1 . . . X . X . . . 1     BLACK (X) has captured 0 stones
  A B C D E F G H J

The real liberties of black should be 5, so if black moves first, white will 
be captured. For the command analyze_semeai c2 c3, gnugo currently answers 
with [3 3 E4] (GAIN??).

SP Lee

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