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Bearoff Problem #2 - Rollout and VARIANT

Posted By: Nack Ballard
Date: Wednesday, 1 November 2017, at 7:49 p.m.

In Response To: Bearoff Problem #2 - Rollout (Stick)





White is Player 2

score: 0
pip: 146
Unlimited Game
Jacoby Beaver
pip: 37
score: 0

Blue is Player 1
XGID=-AbaDD-a--------ba-bbb-b--:1:-1:1:11:0:0:3:0:10

Original position


1.Rollout15/4(4)eq: +1.253
Player:
Opponent:
79.91% (G:63.51% B:10.83%)
20.09% (G:0.00% B:0.00%)
Conf.: ± 0.014 (+1.239...+1.268) - [100.0%]
Duration: 1 minute 42 seconds
2.Rollout15/3* 4/3 1/Offeq: +1.217 (-0.036)
Player:
Opponent:
78.08% (G:61.85% B:13.49%)
21.92% (G:0.00% B:0.00%)
Conf.: ± 0.010 (+1.207...+1.227) - [0.0%]
Duration: 1 minute 52 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 24436117
Moves: 3-ply, cube decisions: XG Roller


Above is Stick's rollout of his original position.

Below is a dramatically contrasting variant. The margin for the 4pt-stack play swings from +.036 to –.177.






White is Player 2

score: 0
pip: 146
Unlimited Game
Jacoby Beaver
pip: 36
score: 0

Blue is Player 1
XGID=-AbaEC-a--------ba-bbb-b--:1:-1:1:11:0:0:3:0:10

Variant
(Compared to the original, Blue is adjusted 5/4)


1.Rollout15/3* 4/3 1/Offeq: +1.270
Player:
Opponent:
79.45% (G:63.88% B:13.53%)
20.55% (G:0.00% B:0.00%)
Conf.: ± 0.011 (+1.260...+1.281) - [100.0%]
Duration: 3 minutes 08 seconds
2.Rollout15/4(3) 1/Offeq: +1.099 (-0.172)
Player:
Opponent:
75.29% (G:57.87% B:12.32%)
24.71% (G:0.00% B:0.00%)
Conf.: ± 0.015 (+1.083...+1.114) - [0.0%]
Duration: 3 minutes 32 seconds
3.Rollout14/3*(3) 1/Offeq: +1.085 (-0.185)
Player:
Opponent:
75.21% (G:58.84% B:11.11%)
24.79% (G:0.00% B:0.00%)
Conf.: ± 0.013 (+1.072...+1.098) - [0.0%]
Duration: 3 minutes 37 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 13417452
Moves: 3-ply, cube decisions: XG Roller


Below is another way to express the same (contrasting) variant. The 4pt-stacking play is demonstrably wrong.

Nack





White is Player 2

score: 0
pip: 146
Unlimited Game
Jacoby Beaver
pip: 36
score: 0

Blue is Player 1
XGID=--baDD-a--------ba-bbb-b--:0:0:1:11:0:0:3:0:10

Same variant, by transposition
(Compared to the original, Blue is adjusted 1/off)


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