John wrote:
> It hen scored one win and one loss against Aya, displaying some incredible
> blunders.

The upper left corner really went wrong. There were several bad moves
but it seems like the problem started when GNU Go played black J18 here,

   A B C D E F G H J K L M N O P Q R S T
19 . . . . . . . . . . . . . . . . . . . 19
18 . . . . . . X . . . . . . O . O X . . 18
17 . . . . X X O O X . . X . . O X . . . 17
16 . O . O . O . . . + . . . O . X . . . 16
15 . . . . . . . . . . . . . . . . . . . 15
14 . . X . O . . . . . . . . . . X . . . 14
13 . . . O . . . . . . . . . . . . . . . 13
12 . . . . . . . . . . . . . . . O . . . 12
11 . . . . . . . . . . . . . . . . . . . 11     WHITE (O) has captured 0 stones
10 . . . + . . . . . + . . . . . X . . . 10     BLACK (X) has captured 0 stones
 9 . . . . . . . . . . . . . . . . . . . 9
 8 . . . . . . . . . . . . . . . X . . . 8
 7 . . . . . . . . . . . . . . . . . . . 7
 6 . . . . . . . . . . . . . O . X . . . 6
 5 . . . X . . . . . . . . . . . . . . . 5
 4 . . . + . . . . . + . . . O . X . . . 4
 3 . O . O . . . . . . . . . . X . . . . 3
 2 . . . . . . . . . . . . . . . . . . . 2
 1 . . . . . . . . . . . . . . . . . . . 1
   A B C D E F G H J K L M N O P Q R S T

instead of H18. One problem is that J18 was recognized as connecting
J17 and M17 but not H18, which looks effective enough.

/Gunnar


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