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Rollout, and a warning about money games

Posted By: Timothy Chow
Date: Saturday, 6 April 2024, at 11:25 a.m.

In Response To: Go, gammon, go! (Timothy Chow)

Konstantin wrote, "The right move is a big blunder at money game," but I suspect that he was looking at a money game with the cube centered. But that would mean that Blue just missed a huge double, and therefore needs to play safe in order to make sure he can double next turn. It's more meaningful, for a money-game rollout, to put the cube on White's side of the board; see the rollout results below.





White is Player 2

score: 1
pip: 105
2 point match
Crawford
pip: 101
score: 0

Blue is Player 1
XGID=-BaACBC-B---c------dBbc-b-:0:0:1:41:0:1:1:2:10
Blue to play 41

1.Rollout16/2* 4/3eq: +1.155
Player:
Opponent:
75.56% (G:32.17% B:0.44%)
24.44% (G:8.18% B:0.30%)
Conf.: ± 0.005 (+1.150...+1.160) - [100.0%]
Duration: 53.2 seconds
2.Rollout16/2* 3/2eq: +1.060 (-0.095)
Player:
Opponent:
77.62% (G:25.37% B:0.42%)
22.38% (G:3.39% B:0.11%)
Conf.: ± 0.004 (+1.056...+1.064) - [0.0%]
Duration: 43.9 seconds
 
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.211.pre-release, MET: Kazaross XG2


For money:





White is Player 2

score: 0
pip: 105
Unlimited Game
pip: 101
score: 0

Blue is Player 1
XGID=-BaACBC-B---c------dBbc-b-:1:-1:1:41:0:0:0:0:10
Blue to play 41

1.Rollout16/2* 3/2eq: +0.707
Player:
Opponent:
79.01% (G:23.43% B:0.14%)
20.99% (G:3.07% B:0.10%)
Conf.: ± 0.005 (+0.702...+0.712) - [100.0%]
Duration: 1 minute 02 seconds
2.Rollout16/2* 4/3eq: +0.691 (-0.016)
Player:
Opponent:
76.30% (G:30.59% B:0.19%)
23.70% (G:5.31% B:0.13%)
Conf.: ± 0.006 (+0.686...+0.697) - [0.0%]
Duration: 1 minute 06 seconds
 
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.211.pre-release

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