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PotD 04-02-24 - Four Variants with Rollouts

Posted By: Nack Ballard
Date: Sunday, 21 April 2024, at 8:35 a.m.

In Response To: Position of the Day 04-02-24 - Rollout (Stick)





White is Player 2

score: 0
pip: 122
Unlimited Game
Jacoby Beaver
pip: 141
score: 0

Blue is Player 1
XGID=-a-BB-C-C-A-bB--bb-bcba-AA:1:1:1:31:0:0:3:0:10
Blue to play 31

1.Rollout1Bar/22* 10/9eq: +0.055
Player:
Opponent:
45.16% (G:18.72% B:1.44%)
54.84% (G:20.88% B:1.39%)
Conf.: ± 0.011 (+0.043...+0.066) - [100.0%]
Duration: 37.0 seconds
2.Rollout1Bar/22* 8/7eq: +0.018 (-0.036)
Player:
Opponent:
44.73% (G:18.69% B:1.30%)
55.27% (G:23.37% B:2.41%)
Conf.: ± 0.013 (+0.006...+0.031) - [0.0%]
Duration: 37.6 seconds
3.Rollout1Bar/22* 24/23eq: +0.001 (-0.054)
Player:
Opponent:
43.57% (G:17.74% B:1.14%)
56.43% (G:21.08% B:1.21%)
Conf.: ± 0.012 (-0.011...+0.013) - [0.0%]
Duration: 35.8 seconds
1 1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

Stick's rollout of his position is above, where 10/9 is the best ace.

Below are three variants. In each, either a spare or a point is adjusted by 1 pip, the result being that 24/23 is the best ace.

(Shifting White's 8pt to her 7pt also makes 24/23 best, but it seemed too obvious an adjustment to include.)

Finally, the fourth variant below shows which ace is best if 10/9 is already on the board.

Nack





White is Player 2

score: 0
pip: 121
Unlimited Game
Jacoby Beaver
pip: 141
score: 0

Blue is Player 1
XGID=-a-BB-C-C-A-bB--bb-bbca-AA:1:1:1:31:0:0:3:0:10
Blue to play 31

1.Rollout1Bar/22* 24/23eq: +0.0727
Player:
Opponent:
45.34% (G:18.61% B:1.19%)
54.66% (G:20.30% B:1.18%)
Conf.: ±0.0112 (+0.0615...+0.0839) - [99.7%]
Duration: 29 minutes 55 seconds
2.Rollout1Bar/22* 10/9eq: +0.0485 (-0.0242)
Player:
Opponent:
44.82% (G:18.79% B:1.29%)
55.18% (G:20.66% B:1.40%)
Conf.: ±0.0133 (+0.0351...+0.0618) - [0.3%]
Duration: 30 minutes 29 seconds
3.Rollout1Bar/22* 8/7eq: -0.0158 (-0.0885)
Player:
Opponent:
44.01% (G:18.11% B:1.09%)
55.99% (G:23.52% B:2.43%)
Conf.: ±0.0135 (-0.0293...-0.0023) - [0.0%]
Duration: 29 minutes 47 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 29994704
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10





White is Player 2

score: 0
pip: 121
Unlimited Game
Jacoby Beaver
pip: 141
score: 0

Blue is Player 1
XGID=--aBB-C-C-A-bB--bb-bcba-AA:1:1:1:31:0:0:3:0:10
Blue to play 31

1.Rollout1Bar/22* 24/23eq: +0.0353
Player:
Opponent:
44.72% (G:18.16% B:0.90%)
55.28% (G:21.10% B:1.33%)
Conf.: ±0.0131 (+0.0222...+0.0484) - [99.9%]
Duration: 31 minutes 45 seconds
2.Rollout1Bar/22* 10/9eq: +0.0058 (-0.0295)
Player:
Opponent:
43.28% (G:17.74% B:0.94%)
56.72% (G:20.60% B:1.36%)
Conf.: ±0.0133 (-0.0075...+0.0191) - [0.1%]
Duration: 31 minutes 19 seconds
3.Rollout1Bar/22* 8/7eq: -0.0051 (-0.0403)
Player:
Opponent:
44.27% (G:18.89% B:0.96%)
55.73% (G:23.61% B:2.52%)
Conf.: ±0.0126 (-0.0177...+0.0075) - [0.0%]
Duration: 31 minutes 39 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 5453517
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10





White is Player 2

score: 0
pip: 122
Unlimited Game
Jacoby Beaver
pip: 143
score: 0

Blue is Player 1
XGID=-a-B-BC-C-A-bB--bb-bcba-AA:1:1:1:31:0:0:3:0:10
Blue to play 31

1.Rollout1Bar/22* 24/23eq: +0.1136
Player:
Opponent:
47.30% (G:18.57% B:1.29%)
52.70% (G:20.35% B:1.19%)
Conf.: ±0.0109 (+0.1027...+0.1245) - [100.0%]
Duration: 5 minutes 39 seconds
2.Rollout1Bar/22* 10/9eq: +0.0852 (-0.0284)
Player:
Opponent:
46.02% (G:18.66% B:1.27%)
53.98% (G:20.34% B:1.33%)
Conf.: ±0.0120 (+0.0732...+0.0972) - [0.0%]
Duration: 5 minutes 28 seconds
3.Rollout1Bar/22* 6/5eq: +0.0668 (-0.0468)
Player:
Opponent:
45.47% (G:18.16% B:1.25%)
54.53% (G:20.33% B:1.17%)
Conf.: ±0.0112 (+0.0556...+0.0780) - [0.0%]
Duration: 5 minutes 19 seconds
4.Rollout1Bar/22* 8/7eq: +0.0236 (-0.0900)
Player:
Opponent:
45.24% (G:18.66% B:1.22%)
54.76% (G:23.24% B:2.35%)
Conf.: ±0.0125 (+0.0111...+0.0361) - [0.0%]
Duration: 5 minutes 42 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 87333052
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10





White is Player 2

score: 0
pip: 122
Unlimited Game
Jacoby Beaver
pip: 140
score: 0

Blue is Player 1
XGID=-a-BB-C-CA--bB--bb-bcba-AA:1:1:1:31:0:0:3:0:10
Blue to play 31

1.Rollout1Bar/22* 8/7eq: +0.0162
Player:
Opponent:
44.96% (G:18.97% B:1.36%)
55.04% (G:23.50% B:2.49%)
Conf.: ±0.0091 (+0.0071...+0.0254) - [95.9%]
Duration: 24 minutes 08 seconds
2.Rollout1Bar/22* 24/23eq: +0.0051 (-0.0112)
Player:
Opponent:
43.81% (G:18.29% B:1.21%)
56.19% (G:22.02% B:1.43%)
Conf.: ±0.0086 (-0.0036...+0.0137) - [4.1%]
Duration: 22 minutes 27 seconds
3.Rollout2Bar/22* 9/8eq: -0.0200 (-0.0363)
Player:
Opponent:
42.79% (G:16.45% B:0.97%)
57.21% (G:19.87% B:0.92%)
Conf.: ±0.0108 (-0.0308...-0.0093) - [0.0%]
Duration: 16 minutes 14 seconds
1 2592 Games rolled with Variance Reduction.
Dice Seed: 7702903
Moves: 3-ply, cube decisions: XG Roller

2 1296 Games rolled with Variance Reduction.
Dice Seed: 7702903
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10

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