[Computer-go] Strong engine that maximizes score

[Josef Moudrik]

>
> I am trying to create a database of games to do some machine-learning
> experiments. My requirements are:
>  * that all games be played by the same strong engine on both sides,
>  * that all games be played to the bitter end (so everything on the board
> is alive at the end), and
>  * that both sides play trying to maximize score, not winning probability.
>
> This last requirement is a bit unusual. Ideally I would like to do this on
> 9x9 first (to be able to try many things quickly) and then 19x19 (the real
> thing).
>
> Is there a strong engine that would allow me to do this? Linux or Mac
> strongly preferred. I'll be happy to pay for it if it's commercial.
>

Hello,

pachi ( pachi.or.cz ) is reasonably strong and you can achieve what you
want by using following comandline options:

pass_all_alive,maximize_score,resign_threshold=0.0

but as the README for maximize_score says:
Note that Pachi in this mode may be slightly weaker, and result margin
should not be taken into account when judging either player's strength.
During the game, the winning/losing margin can be approximated from
Pachi's "extra komi" or "xkomi" reporting in the progress messages.


Regards,
Josef
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