A good test position for XG3 beta?
Posted By: Timothy Chow
Date: Tuesday, 12 August 2014, at 3:52 p.m.
Below is a variant of a reference position that I learned from Mochy. XGR+ rates White's chances significantly more pessimistically than the 4-ply/4-ply rollout below suggests. I suspect that even the 4-ply/4-ply rollout isn't making the most of White's containment chances.
I hear that XG3 beta is supposed to be significantly better than XG2 at containment. Perhaps someone with access to XG3 beta will be interested in doing a high-level rollout of the position below? I'm guessing that its verdict will be that White can take.
White is Player 2
Unlimited Game pip: 32
Blue is Player 1
XGID=-Ga---aa----d----c-e-----A:1:1:1:00:0:0:0:0:10 Blue on roll, cube action?
Analyzed in Rollout No redouble Redouble/Take Player Winning Chances: 64.05% (G:36.62% B:1.25%) 63.97% (G:36.42% B:1.25%) Opponent Winning Chances: 35.95% (G:0.00% B:0.00%) 36.03% (G:0.00% B:0.00%) Cubeless Equities +0.660 +1.312 Cubeful Equities No redouble: +0.897 (-0.103) ±0.007 (+0.890..+0.904) Redouble/Take: +1.023 (+0.023) ±0.009 (+1.014..+1.032) Redouble/Pass: +1.000 Best Cube action: Redouble / Pass Rollout details 2592 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves and cube decisions: 4-ply
Double Decision confidence: 100.0% Take Decision confidence: 100.0% Duration: 3 hours 48 minutes
eXtreme Gammon Version: 2.10
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