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Rollout of variant

Posted By: Bob Koca
Date: Thursday, 7 August 2025, at 4:52 p.m.

In Response To: Rollout of variant (Bob Koca)

Even just making the race a single pip closer in the original position by moving the straggler back a pip shows a significant improvement (about .03) for the on turn player.





White is Player 1

score: 0
pip: 103
Unlimited Game
Jacoby Beaver
pip: 91
score: 0

Blue is Player 2
XGID=-B-BBCBBa--------bbbd-dB--:1:-1:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 76.551% (G:4.321% B:0.079%) 76.813% (G:4.198% B:0.066%)
Opponent Winning Chances: 23.449% (G:1.201% B:0.023%) 23.188% (G:1.295% B:0.026%)
Cubeless Equities +0.5628 +1.1314
Cubeful Equities
No redouble:+0.9441 (-0.0532)±0.0061 (+0.9380..+0.9502)
Redouble/Take:+0.9973±0.0089 (+0.9884..+1.0061)
Redouble/Pass:+1.0000 (+0.0027)
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:72.7%
Duration: 1 minute 20 seconds

eXtreme Gammon Version: 2.10

Vs Original:





White is Player 1

score: 0
pip: 103
Unlimited Game
Jacoby Beaver
pip: 90
score: 0

Blue is Player 2
XGID=-B-BBCBB-a-------bbbd-dB--:1:-1:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 75.838% (G:4.193% B:0.067%) 76.203% (G:4.114% B:0.066%)
Opponent Winning Chances: 24.162% (G:1.438% B:0.025%) 23.797% (G:1.520% B:0.030%)
Cubeless Equities +0.5447 +1.1007
Cubeful Equities
No redouble:+0.9192 (-0.0465)±0.0077 (+0.9115..+0.9270)
Redouble/Take:+0.9657±0.0099 (+0.9558..+0.9756)
Redouble/Pass:+1.0000 (+0.0343)
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 minute 15 seconds

eXtreme Gammon Version: 2.10

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