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Rollout: Which bar? #2

Posted By: Timothy Chow
Date: Sunday, 13 April 2014, at 6:34 p.m.

In Response To: Which bar? #2 (Timothy Chow)

I hate leaving my checkers on the 24pt unsplit after my opponent makes an advanced anchor, but here we are way behind in the race and bar/21 gives us good chances of making an advanced anchor of our own anyway.





White is Player 2

score: 0
pip: 154
Unlimited Game
pip: 182
score: 0

Blue is Player 1
XGID=-----bE-B--AdD---d-e----BA:0:0:1:64:0:0:0:0:10
Blue to play 64

1.Rollout1Bar/21 13/7eq: -0.538
Player:
Opponent:
38.51% (G:8.25% B:0.31%)
61.49% (G:20.37% B:1.56%)
Conf.: 0.016 (-0.554...-0.522) - [99.9%]
Duration: 31 minutes 58 seconds
2.Rollout1Bar/15eq: -0.574 (-0.036)
Player:
Opponent:
38.02% (G:7.27% B:0.33%)
61.98% (G:21.08% B:1.47%)
Conf.: 0.016 (-0.591...-0.558) - [0.1%]
Duration: 32 minutes 25 seconds
3.Rollout1Bar/21 24/18eq: -0.584 (-0.046)
Player:
Opponent:
38.04% (G:7.52% B:0.30%)
61.96% (G:22.93% B:1.40%)
Conf.: 0.016 (-0.600...-0.569) - [0.0%]
Duration: 29 minutes 13 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10


The following position looks like a manually created variant of the above position, but in fact these two positions arose naturally in two different games. Since I hadn't gotten around to studying the first position before the second position arose, I made the same play both times. Oh well. Here the extra builder on the 8pt makes 13/7 even more attractive.





White is Player 2

score: 0
pip: 154
Unlimited Game
pip: 184
score: 0

Blue is Player 1
XGID=-----bD-C--AdD---d-e----BA:0:0:1:64:0:0:0:0:10
Blue to play 64

1.Rollout1Bar/21 13/7eq: -0.473
Player:
Opponent:
40.15% (G:8.47% B:0.32%)
59.85% (G:19.79% B:1.51%)
Conf.: 0.017 (-0.491...-0.456) - [100.0%]
Duration: 34 minutes 01 second
2.Rollout1Bar/21 24/18eq: -0.524 (-0.050)
Player:
Opponent:
39.58% (G:7.41% B:0.31%)
60.42% (G:22.06% B:1.34%)
Conf.: 0.017 (-0.541...-0.507) - [0.0%]
Duration: 31 minutes 41 seconds
3.Rollout1Bar/15eq: -0.529 (-0.055)
Player:
Opponent:
39.18% (G:7.61% B:0.34%)
60.82% (G:20.51% B:1.30%)
Conf.: 0.018 (-0.547...-0.511) - [0.0%]
Duration: 34 minutes 01 second
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10

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