Re: [gnugo-devel] huh, wtf?

[Gunnar Farneback]

Paul wrote:
> can anyone explain me this piece of code (interface/play_gtp.c, 
> around lines 2690, finish_and_score()):
> 
>   do {
>     move_val = genmove_conservative(&i, &j, next);
>     play_move(POS(i, j), next);
>     if (move_val >= 0) {
>       pass = 0;
>       moves++;
>     }
>     else
>       pass++;
> 
>     next = OTHER_COLOR(next);
>   } while (pass < 2 && moves < board_size * board_size);
> 
> what does `moves' serve for?

Isn't that obvious? It breaks the loop in case some bug should cause
GNU Go to play on forever, e.g. getting stuck in a triple ko. Limiting
the number of moves to the number of vertices on the board is of
course arbitrary but large enough not to happen in practice (in
absence of bugs) and small enough to guarantee ending the scoring in
reasonable time.

/Gunnar