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Deep snake cube - Rollouts Galore

Posted By: Stick
Date: Friday, 15 May 2026, at 8:21 a.m.

In Response To: Deep snake cube (Bob Koca)

In short, here are the findings. Rollout results follow below.

  • Unlimited games default settings (3ply/XGR): No double/Beaver

  • Unlimited games super settings (++/++/Gigantic): Double/Take

  • Unlimited games manual rollout (Stick): Double/Pass

So far I've played the position out 40 games manually. You'll have to trust that I play it pretty damn well, in my opinion at least, not always in XG's. I only play the side of the doubler and I still allow XG's mistakes to stand for the other side. XG agrees for the most part with my play but every now and then a quintuple whopper pops up where XG is clearly on the crack. In my 40 games I've won 70 points, lost 24 points, for a net of +46. Obviously if we had dropped the cube it would only be +40 so manual rollout has it as a pass albeit not a large one yet. We have only lost 7 games as the doubler.

Unlimited Games with default XG rollouts settings, 3ply/XGR
White is Player 2

score: 0
pip: 59
Unlimited Game
Jacoby Beaver
pip: 188
score: 0

Blue is Player 1
XGID=----a--BBBBB---AA--A-cdgB-:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 64.87% (G:7.09% B:0.19%) 61.28% (G:7.57% B:0.25%)
Opponent Winning Chances: 35.13% (G:24.03% B:2.52%) 38.72% (G:27.02% B:2.36%)
Cubeless Equities +0.105 +0.020
Cubeful Equities
No double:+0.348±0.019 (+0.330..+0.367)
Double/Beaver:-0.203 (-0.552)±0.067 (-0.270..-0.137)
Double/Pass:+1.000 (+0.652)
Best Cube action: No double / Beaver
Percentage of wrong pass needed to make the double decision right: 31.4%
Rollout details
10368 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Beaver Decision confidence:100.0%
Duration: 12 minutes 22 seconds

Unlimited Rollout XGR++/XGR++/Gigantic
White is Player 2

score: 0
pip: 59
Unlimited Game
Jacoby Beaver
pip: 188
score: 0

Blue is Player 1
XGID=----a--BBBBB---AA--A-cdgB-:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 71.16% (G:7.35% B:0.18%) 72.81% (G:8.27% B:0.26%)
Opponent Winning Chances: 28.84% (G:18.67% B:2.00%) 27.19% (G:17.53% B:1.44%)
Cubeless Equities +0.292 +0.704
Cubeful Equities
No double:+0.606 (-0.007)±0.030 (+0.576..+0.636)
Double/Take:+0.613±0.039 (+0.574..+0.652)
Double/Pass:+1.000 (+0.387)
Best Cube action: Double / Take
Rollout details
972 Games rolled with Variance Reduction.
Dice Seed: 74813031
Moves and cube decisions: XG Roller++
Search interval: Gigantic
Double Decision confidence:61.7%
Take Decision confidence:100.0%
Duration: 10 hours 16 minutes

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