[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

BGonline.org Forums

Rollout Results of Five Related 1-2 Backgame Positions

Posted By: Paul Weaver
Date: Tuesday, 31 July 2012, at 9:42 a.m.

In Response To: Stick vs Ray: NOBODY Gets This 55 Right OTB (Paul Weaver)

Position 1. Looks like hitting is right. Not sure about the best deuce, but covering (7/5) looks bad.





White is Player 2

score: 0
pip: 221
Unlimited Game
Jacoby Beaver
pip: 118
score: 0

Blue is Player 1
XGID=bbbBBABBB--Bb--Aac-cA-----:1:-1:1:24:0:0:3:0:10
Blue to play 24

1.Rollout120/16* 11/9eq: +0.525
Player:
Opponent:
60.87% (G:37.93% B:13.06%)
39.13% (G:1.51% B:0.07%)
Conf.: ± 0.015 (+0.511...+0.540) - [49.1%]
Duration: 32 minutes 41 seconds
2.Rollout120/16* 16/14eq: +0.524 (-0.002)
Player:
Opponent:
60.90% (G:37.73% B:12.81%)
39.10% (G:1.47% B:0.06%)
Conf.: ± 0.014 (+0.509...+0.538) - [36.5%]
Duration: 29 minutes 22 seconds
3.Rollout120/16* 15/13eq: +0.518 (-0.007)
Player:
Opponent:
60.83% (G:37.56% B:12.62%)
39.17% (G:1.48% B:0.07%)
Conf.: ± 0.015 (+0.503...+0.533) - [14.2%]
Duration: 27 minutes 42 seconds
4.Rollout115/9eq: +0.501 (-0.024)
Player:
Opponent:
60.91% (G:36.64% B:11.37%)
39.09% (G:1.59% B:0.08%)
Conf.: ± 0.014 (+0.488...+0.515) - [0.1%]
Duration: 27 minutes 31 seconds
5.Rollout120/16* 8/6eq: +0.492 (-0.033)
Player:
Opponent:
60.02% (G:36.92% B:12.84%)
39.98% (G:1.67% B:0.08%)
Conf.: ± 0.015 (+0.477...+0.508) - [0.0%]
Duration: 27 minutes 00 second
6.Rollout115/13 11/7eq: +0.487 (-0.038)
Player:
Opponent:
60.64% (G:36.39% B:11.19%)
39.36% (G:1.97% B:0.09%)
Conf.: ± 0.014 (+0.473...+0.501) - [0.0%]
Duration: 25 minutes 19 seconds
7.Rollout120/16* 7/5eq: +0.478 (-0.047)
Player:
Opponent:
58.22% (G:37.05% B:14.63%)
41.78% (G:0.66% B:0.02%)
Conf.: ± 0.017 (+0.461...+0.496) - [0.0%]
Duration: 26 minutes 54 seconds
8.Rollout120/14eq: +0.473 (-0.053)
Player:
Opponent:
60.79% (G:35.65% B:9.85%)
39.21% (G:2.07% B:0.12%)
Conf.: ± 0.015 (+0.458...+0.487) - [0.0%]
Duration: 25 minutes 50 seconds
9.Rollout111/5eq: +0.468 (-0.058)
Player:
Opponent:
58.72% (G:36.33% B:12.77%)
41.28% (G:0.80% B:0.03%)
Conf.: ± 0.015 (+0.453...+0.482) - [0.0%]
Duration: 1 hour 25 minutes
1 2592 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.03

Position 2. White's timing is so good that she has a clear take; Blue should not double.





White is stick

score: 0
pip: 221
Unlimited Game
Jacoby Beaver
pip: 118
score: 0

Blue is ray
XGID=bbbBBBBB---BbB--ac-cA-----:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 59.68% (G:37.32% B:14.09%) 57.74% (G:35.96% B:13.32%)
Opponent Winning Chances: 40.32% (G:1.06% B:0.04%) 42.26% (G:0.68% B:0.03%)
Cubeless Equities +0.697 +1.281
Cubeful Equities
No double:+0.969±0.014 (+0.955..+0.983)
Double/Take:+0.883 (-0.086)±0.044 (+0.839..+0.928)
Double/Pass:+1.000 (+0.031)
Best Cube action: No double / Take
Percentage of wrong pass needed to make the double decision right: 42.4%
Rollout details
1296 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 29 minutes 09 seconds

eXtreme Gammon Version: 2.03

Position 3. White's timing is not as good here as it was in Position 2. Big Pass.





White is stick

score: 0
pip: 219
Unlimited Game
Jacoby Beaver
pip: 118
score: 0

Blue is ray
XGID=abcBBABBB--Bb--Aac-cA-----:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 63.82% (G:39.27% B:11.54%) 63.73% (G:38.80% B:10.62%)
Opponent Winning Chances: 36.18% (G:1.20% B:0.04%) 36.27% (G:1.21% B:0.09%)
Cubeless Equities +0.772 +1.512
Cubeful Equities
No double:+1.000±0.067 (+0.933..+1.067)
Double/Take:+1.203 (+0.203)±0.160 (+1.043..+1.363)
Double/Pass:+1.000
Best Cube action: Double / Pass
Rollout details
64 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:50.0%
Take Decision confidence:99.3%
Duration: 58.0 seconds

eXtreme Gammon Version: 2.03

Position 4. If Blue is clever enough to not cover his 5pt, he can double; if he is not so clever, maybe he should wait. Lots of players are passing, so maybe Blue should double, even if he thinks he should cover his 5pt.





White is stick

score: 0
pip: 221
Unlimited Game
Jacoby Beaver
pip: 118
score: 0

Blue is ray
XGID=bbbBBABBB--Bb--Aac-cA-----:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 60.79% (G:37.52% B:12.50%) 59.82% (G:36.90% B:12.04%)
Opponent Winning Chances: 39.21% (G:1.64% B:0.06%) 40.18% (G:1.53% B:0.08%)
Cubeless Equities +0.699 +1.340
Cubeful Equities
No double:+0.955 (-0.016)±0.011 (+0.945..+0.966)
Double/Take:+0.971±0.021 (+0.950..+0.991)
Double/Pass:+1.000 (+0.029)
Best Cube action: Double / Take
Rollout details
5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:90.7%
Take Decision confidence:99.7%
Duration: 1 hour 20 minutes

eXtreme Gammon Version: 2.03

Position 5. Blue can cover here, because White's timing is not as good.





White is stick

score: 0
pip: 219
Unlimited Game
Jacoby Beaver
pip: 118
score: 0

Blue is ray
XGID=abcBBABBB--Bb--Aac-cA-----:1:-1:1:24:0:0:3:0:10
Blue to play 24

1.Rollout111/5eq: +0.583
Player:
Opponent:
63.62% (G:38.06% B:10.69%)
36.38% (G:0.88% B:0.03%)
Conf.: ± 0.012 (+0.571...+0.595) - [96.3%]
Duration: 39 minutes 19 seconds
2.Rollout120/16* 11/9eq: +0.566 (-0.018)
Player:
Opponent:
62.40% (G:38.81% B:12.63%)
37.60% (G:1.69% B:0.09%)
Conf.: ± 0.015 (+0.551...+0.580) - [3.1%]
Duration: 40 minutes 44 seconds
3.Rollout120/16* 15/13eq: +0.558 (-0.025)
Player:
Opponent:
62.18% (G:38.77% B:12.43%)
37.82% (G:1.64% B:0.08%)
Conf.: ± 0.015 (+0.543...+0.574) - [0.5%]
Duration: 39 minutes 55 seconds
4.Rollout120/16* 16/14eq: +0.555 (-0.028)
Player:
Opponent:
62.06% (G:38.71% B:12.35%)
37.94% (G:1.66% B:0.07%)
Conf.: ± 0.014 (+0.541...+0.570) - [0.1%]
Duration: 38 minutes 51 seconds
5.Rollout120/16* 7/5eq: +0.515 (-0.069)
Player:
Opponent:
59.95% (G:37.87% B:13.81%)
40.05% (G:0.79% B:0.04%)
Conf.: ± 0.015 (+0.500...+0.529) - [0.0%]
Duration: 35 minutes 57 seconds
1 2592 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.03

Messages In This Thread

 

Post Response

Your Name:
Your E-Mail Address:
Subject:
Message:

If necessary, enter your password below:

Password:

 

 

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

BGonline.org Forums is maintained by Stick with WebBBS 5.12.