[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Bug-gnubg] Crawford Cubeful equity not matching cubeless during rol
From: |
Joern Thyssen |
Subject: |
Re: [Bug-gnubg] Crawford Cubeful equity not matching cubeless during rollouts. |
Date: |
Fri, 7 May 2004 05:30:23 +0000 |
User-agent: |
Mutt/1.4.2.1i |
On Wed, May 05, 2004 at 03:08:35PM -0400, Eberlein, Robert (REBERLEI) wrote
> I have noticed bizarre results during rollouts of the Crawford game for
> matches. The cubeless and cubeful equities should always match, since
> the cube cannot be turned.
>
> They seem to start out that way, but as the rollout proceeds each
> alternative getting rolled out on my Windows 2000 machine eventually
> shows a significant discrepancy between the cubeless and the cubeful
> equities. I think the cubeful equities are messed up. The simplest way
> to reproduce the problem is to start a 3 point match, resign a gammon on
> move 1 of game 1, and then analyze a 43 opener in game 2. My rollouts
> were 0-ply (expert level) untruncated, with variance reduction. I used
> gnubg 0.14.2 - dev 1.1578 040503.
I've committed a fix.
Joern