Re: [gnugo-devel] Bug report gnugo-3.3.8

[Evan Berggren Daniel]

On Tue, 10 Sep 2002, Gunnar Farneback wrote:

> Markus wrote:
> > I tried reset_position before each examine_position and managed to play 3
> > games (about 10000 calls to examine_position), then GnuGo crashed with:
> >
> > ***assertion failure:
> > board.c:909 - board[pos] == EMPTY near H8***
> >
> >  (variation 538163)
> >    A B C D E F G H J
> >  9 . X . . X . . O X 9
> >  8 X X O X . . X X X 8
> >  7 X X X . X . O . . 7
> >  6 . O . . . O X . X 6
> >  5 . . . O O . . X . 5
> >  4 . X . O O X . O O 4
> >  3 X . + . . O O . . 3
> >  2 . . . . O . O . . 2     WHITE has captured 0 stones
> >  1 . . . . O O X . O 1     BLACK has captured 1 stones
> >    A B C D E F G H J
> >
> > gnugo 3.3.8 (seed 0): You stepped on a bug.
>
> Can you reproduce this crash and/or produce a backtrace?

Isn't this similar to the illegal plays I was reporting with
matcher_check?  Those are reproducible, I sent an earlier email that
includes a random seed that causes the illegal result.

Thanks

Evan Daniel