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Instructive Trio

Posted By: Nack Ballard
Date: Thursday, 22 October 2015, at 10:18 p.m.

In Response To: Rollout and variant (Timothy Chow)

Below are three positions, which you can view side-by-side-by-side if you stretch your window wide enough.

The first position appeared in Tim's post that kicked off this thread, where Blue owns his 13pt. In the second position, Blue has his 14pt. In the third position, Blue has his 15pt.

In Position 1, Blue should play in to his 6pt. In Position 2, the decision is essentially tied. In Position 3, Blue should cover his 1pt. Can you figure out why? If so, you will have learned (or reviewed) a valuable lesson.

Nack





White is Player 2

score: 0
pip: 128
Unlimited Game
pip: 121
score: 0

Blue is Player 1
XGID=-AaBCBB-----dBA--c-bBbc---:1:-1:1:53:0:0:0:0:10

Position 1 ..(13pt)


1.Rollout114/6eq: +0.367
Player:
Opponent:
64.96% (G:25.28% B:0.20%)
35.04% (G:4.93% B:0.19%)
Conf.: � 0.007 (+0.360...+0.374) - [100.0%]
Duration: 8 minutes 31 seconds
2.Rollout114/9 4/1eq: +0.331 (-0.036)
Player:
Opponent:
63.76% (G:24.45% B:0.19%)
36.24% (G:4.66% B:0.18%)
Conf.: � 0.007 (+0.324...+0.338) - [0.0%]
Duration: 8 minutes 04 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller





White is Player 2

score: 0
pip: 128
Unlimited Game
Jacoby Beaver
pip: 123
score: 0

Blue is Player 1
XGID=-AaBCBB-----d-C--c-bBbc---:1:-1:1:53:0:0:3:0:10

Position 2 ..(14pt)


1.Rollout114/6eq: +0.311
Player:
Opponent:
63.74% (G:22.22% B:0.21%)
36.26% (G:4.88% B:0.18%)
Conf.: กำ 0.004 (+0.307...+0.315) - [99.9%]
Duration: 1 hour 34 minutes
2.Rollout114/9 4/1eq: +0.303 (-0.008)
Player:
Opponent:
63.21% (G:22.85% B:0.16%)
36.79% (G:4.73% B:0.16%)
Conf.: กำ 0.003 (+0.299...+0.306) - [0.1%]
Duration: 1 hour 30 minutes
 
1 5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller




White is Player 2

score: 0
pip: 128
Unlimited Game
Jacoby Beaver
pip: 125
score: 0

Blue is Player 1
XGID=-AaBCBB-----d-AB-c-bBbc---:1:-1:1:53:0:0:3:0:10

Position 3 ..(15pt)


1.Rollout114/9 4/1eq: +0.213
Player:
Opponent:
60.34% (G:21.60% B:0.19%)
39.66% (G:5.51% B:0.18%)
Conf.: กำ 0.004 (+0.209...+0.216) - [100.0%]
Duration: 1 hour 48 minutes
2.Rollout114/6eq: +0.183 (-0.030)
Player:
Opponent:
59.81% (G:19.44% B:0.23%)
40.19% (G:5.29% B:0.17%)
Conf.: กำ 0.004 (+0.179...+0.186) - [0.0%]
Duration: 1 hour 44 minutes
 
1 5184 Games rolled with Variance Reduction.
Moves: 3-ply, cube decisions: XG Roller
 

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