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Rollout and my bot donk of the year candidate

Posted By: Neil Robins
Date: Saturday, 27 December 2014, at 2:48 p.m.

In Response To: Double Ones at 2a 4a (Neil Robins)

It's clear you need some flexibility here before it becomes much more damaging to get hit. It's an interesting trade off for the top two moves between the tactical gain from the switch to the five point and the strategic weakening of the position by giving up your best home board point with little hope of remaking it any time soon. it's very close given that the cube action in the rollout is the straightforward immediate double after all moves, which I'm confidentish is right.

Congrats to XG 4-ply here. I don't remember seeing a turnaround of above 0.3 before between the relative equity of what a bot would play and what rolls about best.





White is Player 2

score: 3
pip: 167
7 point match
pip: 177
score: 5

Blue is Player 1
XGID=-a---aBbC---cF-ACabc-b----:0:0:1:11:5:3:0:7:10
Blue to play 11
1.Rollout116/15(2) 16/14eq: -0.768
Player:
Opponent:
43.29% (G:6.89% B:0.69%)
56.71% (G:18.50% B:1.26%)
Conf.: ± 0.006 (-0.774...-0.762) - [99.5%]
Duration: 14 hours 31 minutes
2.Rollout116/15(2) 6/5*(2) eq: -0.779 (-0.012)
Player:
Opponent:
43.45% (G:7.47% B:0.76%)
56.55% (G:18.91% B:1.18%)
Conf.: ± 0.007 (-0.786...-0.773) - [0.5%]
Duration: 14 hours 25 minutes
3.Rollout215/13 6/5*(2) eq: -0.843 (-0.076)
Player:
Opponent:
43.13% (G:7.98% B:0.85%)
56.87% (G:19.97% B:1.29%)
Conf.: ± 0.015 (-0.858...-0.829) - [0.0%]
Duration: 2 hours 19 minutes
4.Rollout316/14 6/5*(2) eq: -0.873 (-0.106)
Player:
Opponent:
42.96% (G:8.04% B:1.22%)
57.04% (G:20.44% B:1.67%)
Conf.: ± 0.021 (-0.894...-0.852) - [0.0%]
Duration: 1 hour 17 minutes
5.Rollout36/5*(2) 5/4(2)eq: -0.891 (-0.123)
Player:
Opponent:
42.74% (G:8.17% B:1.00%)
57.26% (G:20.60% B:1.49%)
Conf.: ± 0.023 (-0.914...-0.868) - [0.0%]
Duration: 1 hour 12 minutes
1 15552 Games rolled with Variance Reduction.
Dice Seed: 71284
First 2 moves and cube decisions: 4-ply
Remaining moves and cube decisions: 4-ply

2 2592 Games rolled with Variance Reduction.
Dice Seed: 71284
First 2 moves and cube decisions: 4-ply
Remaining moves and cube decisions: 4-ply

3 1296 Games rolled with Variance Reduction.
Dice Seed: 71284
First 2 moves and cube decisions: 4-ply
Remaining moves and cube decisions: 4-ply

eXtreme Gammon Version: 2.10, MET: Rockwell-Kazaross





White is Player 2

score: 3
pip: 167
7 point match
pip: 177
score: 5

Blue is Player 1
XGID=-a---aBbC---cF-ACabc-b----:0:0:1:11:5:3:0:7:10
Blue to play 11
1.4-ply15/13 6/5*(2) eq: -0.632
Player:
Opponent:
44.96% (G:6.85% B:0.26%)
55.04% (G:17.26% B:0.34%)
2.4-ply16/15(2) 6/5*(2) eq: -0.674 (-0.042)
Player:
Opponent:
44.63% (G:6.73% B:0.29%)
55.37% (G:17.84% B:0.41%)
3.4-ply16/14 6/5*(2) eq: -0.740 (-0.108)
Player:
Opponent:
44.41% (G:7.36% B:0.31%)
55.59% (G:19.03% B:0.51%)
4.4-ply6/5*(2) 5/4(2)eq: -0.754 (-0.121)
Player:
Opponent:
43.98% (G:7.13% B:0.29%)
56.02% (G:18.89% B:0.43%)
5.4-ply16/15(2) 16/14eq: -0.873 (-0.241)
Player:
Opponent:
42.52% (G:6.92% B:0.24%)
57.48% (G:19.99% B:0.43%)

eXtreme Gammon Version: 2.10, MET: Rockwell-Kazaross

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