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From: | Hugh Sconyers |
Subject: | [Bug-gnubg] bug in 3 ply equities |
Date: | Mon, 17 Nov 2003 06:50:17 -0800 |
Hi
There is something strange going in this
position.
side on roll has:
1-24, 1-23, 1-13, 2 each 9 8 7 6 5 4 pc =
138
side not on roll has 1- 22
it is dmp.
if you ask gnu for an evaluation, it give 9.69%
mwc. which is a little high, but close to the right answer of
8%.
if you now ask gnu how to play 2-1 it gives these
results:
1. Cubeful
3-ply 23/22
13/11
MWC: 31.18%
0.312 0.000 0.000 - 0.688 0.024 0.018 3-ply cubeful [grandmaster] 2. Cubeful 3-ply 24/22 23/22 MWC: 31.13% ( -0.05%) 0.311 0.000 0.000 - 0.689 0.031 0.017 3-ply cubeful [grandmaster] 3. Cubeful 3-ply 23/21 13/12 MWC: 30.96% ( -0.22%) 0.310 0.000 0.000 - 0.690 0.023 0.019 3-ply cubeful [grandmaster] 4. Cubeful 3-ply 13/10 MWC: 30.86% ( -0.32%) 0.309 0.000 0.000 - 0.691 0.025 0.019 3-ply cubeful [grandmaster] 5. Cubeful 3-ply 24/21 MWC: 30.74% ( -0.44%) 0.307 0.000 0.000 - 0.693 0.030 0.017 3-ply cubeful [grandmaster] 6. Cubeful 3-ply 24/22 13/12 MWC: 30.68% ( -0.50%) 0.307 0.000 0.000 - 0.693 0.031 0.017 3-ply cubeful [grandmaster] 7. Cubeful 3-ply 23/20 MWC: 30.61% ( -0.57%) 0.306 0.000 0.000 - 0.694 0.024 0.019 3-ply cubeful [grandmaster] 8. Cubeful 0-ply 24/23 13/11 MWC: 7.42% (-23.76%) 0.074 0.000 0.000 - 0.926 0.018 0.010 0-ply cubeful [expert] the 0 ply numbers are very close to right and
all the 3 ply number are way off and most likely all the moves are about the
same. this looks like a bug to me.
regards
hugh
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