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Rollout

Posted By: Timothy Chow
Date: Monday, 26 October 2015, at 1:09 a.m.

In Response To: Interesting non-contact checker play (Timothy Chow)

To answer hominid's question, I think it's a mistake to fixate solely on the question of what the top play is. What I find interesting here are the equity differences. For example, it seems that 10/7 is almost as far behind 6/5 6/4 as 6/5 6/4 is behind 10/8 6/5.

I haven't done this but it might be interesting to find a score where the different options here straddle the take/pass borderline (assuming a centered cube).





White is Player 2

score: 0
pip: 59
Unlimited Game
pip: 67
score: 0

Blue is Player 1
XGID=-ABBCBD---A--------dccaba-:1:1:1:21:0:0:0:0:10
Blue to play 21

1.Rollout110/8 6/5eq: -0.436
Player:
Opponent:		24.61% (G:0.00% B:0.00%)
75.39% (G:0.00% B:0.00%)		Conf.: ± 0.001 (-0.438...-0.435) - [100.0%]
Duration: 1 hour 07 minutes
2.Rollout16/5 6/4eq: -0.449 (-0.012)
Player:
Opponent:		24.08% (G:0.00% B:0.00%)
75.92% (G:0.00% B:0.00%)		Conf.: ± 0.001 (-0.450...-0.447) - [0.0%]
Duration: 1 hour 08 minutes
3.Rollout110/9 6/4eq: -0.452 (-0.015)
Player:
Opponent:		23.95% (G:0.00% B:0.00%)
76.05% (G:0.00% B:0.00%)		Conf.: ± 0.001 (-0.453...-0.451) - [0.0%]
Duration: 59 minutes 38 seconds
4.Rollout110/7eq: -0.458 (-0.021)
Player:
Opponent:		23.68% (G:0.00% B:0.00%)
76.32% (G:0.00% B:0.00%)		Conf.: ± 0.001 (-0.459...-0.457) - [0.0%]
Duration: 1 hour 06 minutes
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves and cube decisions: XG Roller+
Search interval: Huge

eXtreme Gammon Version: 2.19.208.pre-release

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