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Rollout: Which bar? #4

Posted By: Timothy Chow
Date: Wednesday, 16 April 2014, at 3:43 p.m.

In Response To: Which bar? #4 (Igor)

This is what I call a "straggler vs anchor position." Back in February, when I introduced this terminology on rec.games.backgammon, Stick said, "the other types of games you mention, single straggler v. single straggler or single straggler v. high anchor, aren't all that interesting in general. Run the guy, end of story. Yes, window for you to show the exceptions...but really, run the guy." However, in this position, the computer doesn't like Pottling. 8/2 is close, winning the most games pseudocubelessly according to this rollout, but as Mochy has said, "I hate 8/2. It is illegal in Denmark."





White is Player 2

score: 0
pip: 149
Unlimited Game
pip: 152
score: 0

Blue is Player 1
XGID=----b-E-D---cE-b-b-d-b---A:0:0:1:61:0:0:0:0:10
Blue to play 61

1.Rollout1Bar/24 13/7eq: -0.481
Player:
Opponent:
39.09% (G:7.29% B:0.29%)
60.91% (G:18.34% B:0.61%)
Conf.: ± 0.007 (-0.488...-0.475) - [100.0%]
Duration: 1 hour 40 minutes
2.Rollout1Bar/24 8/2eq: -0.505 (-0.024)
Player:
Opponent:
39.20% (G:6.98% B:0.26%)
60.80% (G:20.47% B:0.50%)
Conf.: ± 0.007 (-0.512...-0.498) - [0.0%]
Duration: 1 hour 36 minutes
3.Rollout1Bar/18eq: -0.537 (-0.056)
Player:
Opponent:
38.59% (G:5.44% B:0.23%)
61.41% (G:20.20% B:0.41%)
Conf.: ± 0.010 (-0.547...-0.527) - [0.0%]
Duration: 1 hour 35 minutes
1 5184 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10

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