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Bar point holding game: cube reference position

Posted By: David Levy
Date: Friday, 23 September 2016, at 4:30 p.m.

At the score, there is but an eyelash between take and pass. As the roller is worse in the race, the take becomes clear.





White is Player 2

score: 2
pip: 93
7 point match
pip: 58
score: 2

Blue is Player 1
XGID=--BCBBBB----a-----Bbbbbcc-:2:-1:-1:00:2:2:0:7:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 83.96% (G:0.24% B:0.00%) 84.10% (G:1.00% B:0.00%)
Opponent Winning Chances: 16.04% (G:0.68% B:0.01%) 15.90% (G:0.74% B:0.06%)
Cubeless Equities +0.677 +0.998
Cubeful Equities
No redouble:+0.708 (-0.290)±0.001 (+0.707..+0.709)
Redouble/Take:+0.998±0.001 (+0.996..+0.999)
Redouble/Pass:+1.000 (+0.002)
Best Cube action: Redouble / Take
Rollout details
1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 1.3 seconds

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

For example, giving roller another five pips:





White is Player 2

score: 2
pip: 93
7 point match
pip: 63
score: 2

Blue is Player 1
XGID=--BCBBBB----a-----Bcbbbcb-:2:-1:-1:00:2:2:0:7:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 83.16% (G:0.26% B:0.00%) 83.20% (G:0.64% B:0.00%)
Opponent Winning Chances: 16.84% (G:0.68% B:0.02%) 16.80% (G:0.78% B:0.02%)
Cubeless Equities +0.661 +0.971
Cubeful Equities
No redouble:+0.707 (-0.264)±0.001 (+0.706..+0.708)
Redouble/Take:+0.971±0.001 (+0.970..+0.973)
Redouble/Pass:+1.000 (+0.029)
Best Cube action: Redouble / Take
Rollout details
1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 11.2 seconds

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

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