RE: [Bug-gnubg] Eval

[Albert Silver]

> -----Original Message-----
> From: address@hidden [mailto:bug-gnubg-
> address@hidden On Behalf Of Joern Thyssen
> Sent: Saturday, March 08, 2003 1:55 PM
> To: Albert Silver
> Cc: 'GNUBackgammon bug reporting'
> Subject: Re: [Bug-gnubg] Eval
> 
> On Sat, Mar 08, 2003 at 01:18:45PM -0300, Albert Silver wrote
> > There's something wrong with GNU's eval. Take the following position
and
> > look at the respective evaluations at 0, 1, 2, and 3 plies.
> 
> What's wrong? This is obviously a position that neural net doesn't
> grasp, hence the huge difference between odd and even plies.
> 
> Are you playing with Jacoby rule? This explains why the 2-ply equity
is
> since -1, because gnubg doesn't see a single market gainer.

Yes, the Jacoby rule is on. Actually it shows the same evaluation if
both cube and Jacoby are turned off, but shouldn't the eval not go
beyond -1.000 if the Jacoby rule is on and the cube is in the center?

                                                Albert

> 
> Jørn