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Position of the Day 08-08-25 - Not a ref pos - Rollout

Posted By: Stick
Date: Friday, 14 November 2025, at 12:48 p.m.

In Response To: Position of the Day 08-08-25 - Not a ref pos (Stick)

This ends up being more or less what I expected of XG's analysis. On 3 ply and XGR+ it thinks it's a massive take worth +0.850 roughly. 4 ply says small pass and ++ has it as a borderline decision. I expected most plies to say take and a rollout to say pass as is common with this type of decision where XG can't see far enough ahead to realize how the game will unfold.

The first rollout I extended more than usual because even though the confidence was 100% early on there was still a lot of variance left and I wanted to stomp some of it out to get a firmer idea of how big XG though the T/P decision was.

The second rollout is the same position but I've upped the settings some to XGR+/XGR+ and a large move filter. I wanted a more trustworthy answer as I don't trust XG's default rollout settings to play this great. I didn't want to spend forever on the rollout either though so I settled for +/+/L. As we can see, +/+/L even with a decent amount of variant left thinks this is a monster pass.





White is Player 1

score: 0
pip: 67
Unlimited Game
Jacoby Beaver
pip: 133
score: 0

Blue is Player 2
XGID=-aA----aa-a-aa---A-c-bbAbA:1:-1:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 80.32% (G:0.00% B:0.00%) 80.17% (G:0.00% B:0.00%)
Opponent Winning Chances: 19.68% (G:1.89% B:0.52%) 19.83% (G:1.99% B:0.35%)
Cubeless Equities +0.582 +1.160
Cubeful Equities
No redouble:+0.923 (-0.077)±0.005 (+0.918..+0.929)
Redouble/Take:+1.036 (+0.036)±0.010 (+1.026..+1.046)
Redouble/Pass:+1.000
Best Cube action: Redouble / Pass
Rollout details
20736 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 6 minutes 56 seconds


XGR+/XGR+ Large





White is Player 1

score: 0
pip: 67
Unlimited Game
Jacoby Beaver
pip: 133
score: 0

Blue is Player 2
XGID=-aA----aa-a-aa---A-c-bbAbA:1:-1:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 81.61% (G:0.00% B:0.00%) 83.80% (G:0.00% B:0.00%)
Opponent Winning Chances: 18.39% (G:1.67% B:0.53%) 16.20% (G:1.17% B:0.25%)
Cubeless Equities +0.610 +1.324
Cubeful Equities
No redouble:+1.000±0.018 (+0.982..+1.018)
Redouble/Take:+1.230 (+0.230)±0.027 (+1.203..+1.256)
Redouble/Pass:+1.000
Best Cube action: Redouble / Pass
Rollout details
1296 Games rolled with Variance Reduction.
Moves and cube decisions: XG Roller+
Search interval: Large
Double Decision confidence:50.0%
Take Decision confidence:100.0%
Duration: 1 hour 06 minutes

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