[Bug-gnubg] Re: GNU in bearoff races

[Joseph Heled]

> Neil Kaz wrote:
> 
> Here's a typical position to judge how well GNU does bearing off. Does GNU
> have and use a database when all checkers are in the home board ?
> 
> Anyhow.. GNU thinks and Snowie's database both judge the equity here to be
> -.125 while long rollouts with both programs result in 44.05% wins which is an
> equity of -.119.
> This is bcuz the rollout finds desparation plays that set up final doubles in
> the last couple of turns when way behind.
> 

GNU ID: /38AAAC49wAAAA

I don't think you need a long rollout for this position. I think I can give you
the "ultimate rollout". A 16ply gives me 0.440498 (or -0.119004 eq). It takes
only a few seconds for a 16 ply because of the aggressive caching of previously
reached positions. Of course, this can be wrong as well since it might misplay a
little on the way.

-Joseph