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Position of the Day 03-21-26 - On the way to a 16 cube - Rollouts

Posted By: Stick
Date: Sunday, 29 March 2026, at 10:27 a.m.

In Response To: Position of the Day 03-21-26 - On the way to a 16 cube (Stick)

Didn't figure I'd get many replies when it's four problems in one but I've had a few of these games against XG lately heading to a 16 cube. Interesting to see the evolution of the game and if either of us, even the almighty, might have made an cube mistakes. (esp. in positions like these that I'd deem unusual)





White is Player 2

score: 0
pip: 127
Unlimited Game
Jacoby Beaver
pip: 143
score: 0

Blue is Player 1
XGID=-ba---ECD---A----b-bbadaB-:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 64.42% (G:22.29% B:2.02%) 64.32% (G:22.53% B:2.26%)
Opponent Winning Chances: 35.58% (G:11.98% B:0.65%) 35.68% (G:12.02% B:0.65%)
Cubeless Equities +0.405 +0.815
Cubeful Equities
No double:+0.555±0.007 (+0.547..+0.562)
Double/Take:+0.552 (-0.002)±0.011 (+0.541..+0.563)
Double/Pass:+1.000 (+0.445)
Best Cube action: No double / Take
Percentage of wrong pass needed to make the double decision right: 0.5%
Rollout details
5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:63.5%
Take Decision confidence:100.0%
Duration: 3 minutes 25 seconds


3 ply and XGR+ had this as a clear take being worth ~+0.900. XG Roller and 4 ply both think it's a pass and ++ thinks it's a tiny take.





White is Player 1

score: 0
pip: 76
Unlimited Game
Jacoby Beaver
pip: 108
score: 0

Blue is Player 2
XGID=-G-aFa--------baa--bA-c-dA:1:-1:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 72.87% (G:15.15% B:0.32%) 72.88% (G:15.98% B:0.31%)
Opponent Winning Chances: 27.13% (G:3.41% B:0.03%) 27.12% (G:3.58% B:0.02%)
Cubeless Equities +0.578 +1.169
Cubeful Equities
No redouble:+0.828 (-0.164)±0.004 (+0.824..+0.832)
Redouble/Take:+0.993±0.008 (+0.984..+1.001)
Redouble/Pass:+1.000 (+0.007)
Best Cube action: Redouble / Take
Rollout details
5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:95.9%
Duration: 1 minute 23 seconds






White is Player 2

score: 0
pip: 74
Unlimited Game
Jacoby Beaver
pip: 46
score: 0

Blue is Player 1
XGID=-HB-Ca---A--aA-----bc-c-e-:2:1:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 75.77% (G:0.86% B:0.00%) 76.11% (G:1.11% B:0.00%)
Opponent Winning Chances: 24.23% (G:0.46% B:0.00%) 23.89% (G:0.47% B:0.01%)
Cubeless Equities +0.519 +1.057
Cubeful Equities
No redouble:+0.746 (-0.126)±0.004 (+0.742..+0.750)
Redouble/Take:+0.872±0.008 (+0.864..+0.880)
Redouble/Pass:+1.000 (+0.128)
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: 4.3 seconds






White is Player 1

score: 0
pip: 46
Unlimited Game
Jacoby Beaver
pip: 54
score: 0

Blue is Player 2
XGID=-IB-B----a---------bb-bbfA:3:-1:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 78.42% (G:0.00% B:0.00%) 78.18% (G:0.00% B:0.00%)
Opponent Winning Chances: 21.58% (G:0.02% B:0.00%) 21.82% (G:0.02% B:0.00%)
Cubeless Equities +0.568 +1.127
Cubeful Equities
No redouble:+0.856 (-0.126)±0.002 (+0.854..+0.859)
Redouble/Take:+0.982±0.005 (+0.977..+0.987)
Redouble/Pass:+1.000 (+0.018)
Best Cube action: Redouble / Take
Rollout details
5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 2.6 seconds

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