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Re: [Bug-gnubg] Huge evaluation difference
From: |
Philippe Michel |
Subject: |
Re: [Bug-gnubg] Huge evaluation difference |
Date: |
Wed, 20 Mar 2019 23:10:21 +0100 |
User-agent: |
Mutt/1.11.4 (2019-03-13) |
On Wed, Mar 20, 2019 at 11:40:41AM +0100, ?ystein Sch?nning-Johansen wrote:
> I managed to calculate the gammon saving probability of the posted position
> in a few minutes using about 15GB of memory. (I also have a slower version
> of the tool that uses sparse matrices to store the probabilities, but I did
> not try that today)
>
> address@hidden:~/octopus/twoside$ ./lopsided --mode=gammonsave
> 2000036300001 2231
> #off: 0 board: 2----3|63----|1-----|-----
> chk(bb): x----x|xx----|x-----|----- back: 13 #out: 10 #cross: 26
> #off: 7 board: 2231--|------|------|-----
> chk(bb): xxxx--|------|------|----- back: 4 #out: 0 #cross: 8
> Cubeless prob. of saving gammon: 0.129424
This is not directly comparable with the numbers below since your number
is before the roll. Can you compute it from the other side (probability
of winning a gammon) for the first 2 or 3 choices of playing a 61 roll ?
> > 1. Cubeful 2-ply 13/6 Eq.: -2.201
> > 0.000 0.000 0.000 - 1.000 0.913 0.000
> > 2-ply cubeful prune [world class]
> > 2. Cubeful 2-ply 8/2 7/6 Eq.: -2.204 (-0.003)
> > 0.000 0.000 0.000 - 1.000 0.915 0.000
> > 2-ply cubeful prune [world class]
> > 3. Cubeful 2-ply 7/6 7/1 Eq.: -2.213 (-0.013)
> > 0.000 0.000 0.000 - 1.000 0.923 0.000
> > 2-ply cubeful prune [world class]
> > 4. Cubeful 2-ply 13/12 8/2 Eq.: -2.234 (-0.034)
> > 0.000 0.000 0.000 - 1.000 0.939 0.000
> > 2-ply cubeful prune [world class]
> > 5. Cubeful 2-ply 13/12 7/1 Eq.: -2.240 (-0.039)
> > 0.000 0.000 0.000 - 1.000 0.943 0.000
> > 2-ply cubeful prune [world class]
> > 6. Cubeful 2-ply 13/7 6/5 Eq.: -2.294 (-0.093)
> > 0.000 0.000 0.000 - 1.000 0.984 0.000
> > 2-ply cubeful prune [world class]
- [Bug-gnubg] Huge evaluation difference, Terje Pedersen, 2019/03/18
- Re: [Bug-gnubg] Huge evaluation difference, Philippe Michel, 2019/03/19
- Re: [Bug-gnubg] Huge evaluation difference, Øystein Schønning-Johansen, 2019/03/20
- Re: [Bug-gnubg] Huge evaluation difference,
Philippe Michel <=
- Re: [Bug-gnubg] Huge evaluation difference, Øystein Schønning-Johansen, 2019/03/21
- Re: [Bug-gnubg] Huge evaluation difference, Philippe Michel, 2019/03/24
- Re: [Bug-gnubg] Huge evaluation difference, Øystein Schønning-Johansen, 2019/03/24
- [Bug-gnubg] Large bearoff databases (was: Huge evaluation difference), Philippe Michel, 2019/03/24
- Re: [Bug-gnubg] Large bearoff databases (was: Huge evaluation difference), Øystein Schønning-Johansen, 2019/03/24
- Re: [Bug-gnubg] Large bearoff databases (was: Huge evaluation difference), Øystein Schønning-Johansen, 2019/03/24