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BGonline.org Forums
Backgammon Position - Rollout
Posted By: Stick In Response To: Backgammon Position - Rollout (Timothy Chow)
Date: Wednesday, 25 February 2015, at 3:41 a.m.
In response to Casper's original post here you go.
If we hit, do we have a center cube from the bar?
No.
White is Player 1
score: 0
pip: 153Unlimited Game
Jacoby Beaverpip: 125
score: 0
Blue is Player 2XGID=a-ABABC-A---ba-a-c-cCAbbA-:0:0:-1:00:0:0:3:0:10 Blue on roll, cube action?
Analyzed in Rollout No double Double/Take Player Winning Chances: 55.94% (G:30.69% B:2.66%) 55.81% (G:31.51% B:3.46%) Opponent Winning Chances: 44.06% (G:16.72% B:0.99%) 44.19% (G:17.02% B:1.02%) Cubeless Equities +0.275 +0.571 Cubeful Equities No double: +0.215 ±0.012 (+0.202..+0.227) Double/Take: +0.168 (-0.047) ±0.022 (+0.146..+0.189) Double/Pass: +1.000 (+0.785) Best Cube action: No double / Take Percentage of wrong pass needed to make the double decision right: 5.3% Rollout details 2592 Games rolled with Variance Reduction.
Dice Seed: 93131119
Moves: 3-ply, cube decisions: XG RollerDouble Decision confidence: 100.0% Take Decision confidence: 100.0% Duration: 36 minutes 22 seconds eXtreme Gammon Version: 2.19.206.pre-release
Assuming that the opponent does not double and dances, do we have a double?
Question seems to be does the opponent have a take meaning the following question seems obvious.
Assuming that the opponent doubles and then dances after our take, do we have a redouble?
White is Player 2
score: 0
pip: 125Unlimited Game
Jacoby Beaverpip: 153
score: 0
Blue is Player 1XGID=a-ABABC-A---ba-a-c-cCAbbA-:0:0:1:00:0:0:3:0:10 Blue on roll, cube action?
Analyzed in Rollout No double Double/Take Player Winning Chances: 65.17% (G:35.32% B:2.14%) 66.40% (G:37.18% B:2.30%) Opponent Winning Chances: 34.83% (G:11.04% B:0.62%) 33.60% (G:11.36% B:0.61%) Cubeless Equities +0.562 +1.206 Cubeful Equities No double: +0.591 (-0.356) ±0.013 (+0.578..+0.604) Double/Take: +0.947 ±0.025 (+0.922..+0.972) Double/Pass: +1.000 (+0.053) Best Cube action: Double / Take Rollout details 972 Games rolled with Variance Reduction.
Dice Seed: 59526471
Moves: 3-ply, cube decisions: XG RollerDouble Decision confidence: 100.0% Take Decision confidence: 100.0% Duration: 9 minutes 00 second eXtreme Gammon Version: 2.19.206.pre-release
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