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Rollouts and After-Thoughts

Posted By: rambiz
Date: Saturday, 15 December 2012, at 4:33 p.m.

In Response To: defending against the free roll (Bob Koca)

At DMP, where we don't care to lose a gammon, the roll-out result shows that the "pay now and pay later" moves are virtually tied.





White is Player 2

score: 0
pip: 120
1 point match
pip: 100
score: 0

Blue is Player 1
XGID=--BBBCCc-----B---bbbbbbA--:0:0:1:52:0:0:0:1:10
Blue to play 52

1.Rollout16/1 5/3eq: -0.863
Player:
Opponent:
6.86% (G:0.28% B:0.01%)
93.14% (G:20.73% B:1.64%)
Conf: ± 0.005 (-0.868...-0.858)
Duration: 35 minutes 58 seconds
2.Rollout113/11 6/1eq: -0.865 (-0.002)
Player:
Opponent:
6.74% (G:0.15% B:0.12%)
93.26% (G:22.13% B:1.46%)
Conf: ± 0.004 (-0.869...-0.861)
Duration: 34 minutes 55 seconds
3.Rollout113/11 13/8eq: -0.875 (-0.012)
Player:
Opponent:
6.26% (G:0.16% B:0.08%)
93.74% (G:18.28% B:1.14%)
Conf: ± 0.004 (-0.879...-0.871)
Duration: 44 minutes 38 seconds
4.Rollout113/6eq: -0.882 (-0.019)
Player:
Opponent:
5.91% (G:0.14% B:0.00%)
94.09% (G:13.54% B:0.69%)
Conf: ± 0.004 (-0.886...-0.878)
Duration: 46 minutes 13 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 61912136
Moves and cube decisions: 3 ply

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

At the score the opponent should hit us, if we volunteer a shot now.





White is Player 2

score: 6
pip: 120
13 point match
pip: 93
score: 9

Blue is Player 1
XGID=--BBBCDc-----A---bbbbbbA--:0:0:-1:26:9:6:0:13:10
White to play 26

1.Rollout118/12* 12/10eq: +1.086
Player:
Opponent:
87.91% (G:17.53% B:0.52%)
12.09% (G:0.38% B:0.00%)
Conf: ± 0.005 (+1.081...+1.091)
Duration: 27 minutes 17 seconds
2.Rollout118/10eq: +1.051 (-0.036)
Player:
Opponent:
91.69% (G:9.80% B:0.32%)
8.31% (G:0.37% B:0.01%)
Conf: ± 0.006 (+1.045...+1.057)
Duration: 55 minutes 15 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 61912136
Moves and cube decisions: 3 ply

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

At DMP it is a big mistake for the opponent to hit us, if we volunteer a shot.





White is Player 2

score: 0
pip: 120
1 point match
pip: 93
score: 0

Blue is Player 1
XGID=--BBBCDc-----A---bbbbbbA--:0:0:-1:26:0:0:0:1:10
White to play 26

1.Rollout118/10eq: +0.891
Player:
Opponent:
94.53% (G:10.28% B:0.22%)
5.47% (G:0.21% B:0.01%)
Conf: ± 0.009 (+0.882...+0.900)
Duration: 4 minutes 37 seconds
2.Rollout218/12* 12/10eq: +0.785 (-0.106)
Player:
Opponent:
89.23% (G:15.04% B:0.40%)
10.77% (G:0.16% B:0.00%)
Conf: ± 0.010 (+0.775...+0.795)
Duration: 1 minute 45 seconds
1 146 Games rolled with Variance Reduction.
Dice Seed: 61912136
Moves and cube decisions: 3 ply

2 145 Games rolled with Variance Reduction.
Dice Seed: 61912136
Moves and cube decisions: 3 ply

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

So why should volunteering be correct at the score??





White is Player 2

score: 6
pip: 120
13 point match
pip: 100
score: 9

Blue is Player 1
XGID=--BBBCCc-----B---bbbbbbA--:0:0:1:52:9:6:0:13:10
Blue to play 52

1.Rollout113/6eq: -1.082
Player:
Opponent:
10.15% (G:0.43% B:0.01%)
89.85% (G:15.16% B:0.41%)
Conf: ± 0.006 (-1.088...-1.076)
Duration: 31 minutes 25 seconds
2.Rollout16/1 5/3eq: -1.104 (-0.022)
Player:
Opponent:
8.48% (G:0.48% B:0.02%)
91.52% (G:16.04% B:0.53%)
Conf: ± 0.008 (-1.112...-1.096)
Duration: 31 minutes 51 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 61912136
Moves and cube decisions: 3 ply

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

I think that the roll-out results for positions 1 and 4 are not consistent.

/tdtd style= 1296 Games rolled with Variance Reduction. score: 0../Images/p_dn_b_2.gif

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