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Rollout

Posted By: Neil Robins
Date: Monday, 21 March 2016, at 8:24 a.m.

In Response To: A 21 from here (Neil Robins)

The main interest to me in this position was just how bad bots were at identifying the clearly best play here. There are only 39 legal moves here but XG fails to get it into the top 32 displayed, GNU 0-ply rates it 30th best and BGBlitx 32nd.





White is Player 2

score: 1
pip: 112
11 point match
pip: 109
score: 0

Blue is Player 1
XGID=--AAACBbC---bD----abbbbb--:0:0:-1:21:1:0:0:11:10
Blue to play 21
1.Rollout118/15eq: -0.028
Player:
Opponent:		49.07% (G:4.12% B:0.10%)
50.93% (G:3.55% B:0.06%)		Conf.: ± 0.005 (-0.032...-0.023) - [100.0%]
Duration: 6 minutes 42 seconds
2.Rollout118/16 7/6eq: -0.064 (-0.036)
Player:
Opponent:		47.99% (G:3.59% B:0.08%)
52.01% (G:3.46% B:0.04%)		Conf.: ± 0.005 (-0.069...-0.058) - [0.0%]
Duration: 5 minutes 02 seconds
3.Rollout17/4eq: -0.079 (-0.052)
Player:
Opponent:		47.58% (G:1.84% B:0.03%)
52.42% (G:1.69% B:0.03%)		Conf.: ± 0.005 (-0.085...-0.074) - [0.0%]
Duration: 4 minutes 30 seconds
4.Rollout17/5 2/1eq: -0.081 (-0.054)
Player:
Opponent:		47.55% (G:1.84% B:0.04%)
52.45% (G:1.82% B:0.05%)		Conf.: ± 0.005 (-0.087...-0.076) - [0.0%]
Duration: 4 minutes 27 seconds
5.Rollout113/10eq: -0.085 (-0.058)
Player:
Opponent:		47.39% (G:1.67% B:0.03%)
52.61% (G:1.57% B:0.04%)		Conf.: ± 0.006 (-0.091...-0.080) - [0.0%]
Duration: 3 minutes 47 seconds
1 2592 Games rolled with Variance Reduction.
Dice Seed: 71284
First 2 moves: 4-ply, cube decisions: XG Roller+
Remaining moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10, MET: Rockwell-Kazaross

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