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Rollout: Just make the DMP play

Posted By: Timothy Chow
Date: Wednesday, 5 November 2014, at 3:53 p.m.

In Response To: Just make the DMP play (Timothy Chow)

Speaking of categorizing errors, I categorize this as a "pre-backgame" position. White has an anchor and a half, and hitting gives her the chance of making a second anchor, so we have to assess that tradeoff.

According to the rollout, the DMP play is clear: anchor. For money, the rollout says that the extra (net) gammon wins of the double hit (or even hit and cover) outweigh the extra losses, and anchoring is a whopper.





White is Player 2

score: 0
pip: 164
1 point match
pip: 137
score: 0

Blue is Player 1
XGID=-A-aBbDBB-b-bB---bab-baA-A:0:0:1:53:0:0:0:1:10
Blue to play 53

1.Rollout1Bar/20 23/20eq: +0.131
Player:
Opponent:
56.54% (G:22.24% B:0.72%)
43.46% (G:7.68% B:0.60%)
Conf.: ± 0.005 (+0.126...+0.136) - [100.0%]
Duration: 19 minutes 28 seconds
2.Rollout1Bar/22* 23/18* eq: +0.089 (-0.042)
Player:
Opponent:
54.46% (G:34.61% B:2.97%)
45.54% (G:9.48% B:0.86%)
Conf.: ± 0.008 (+0.082...+0.097) - [0.0%]
Duration: 30 minutes 47 seconds
3.Rollout1Bar/22* 6/1eq: +0.050 (-0.081)
Player:
Opponent:
52.49% (G:35.37% B:1.96%)
47.51% (G:10.56% B:1.15%)
Conf.: ± 0.007 (+0.043...+0.057) - [0.0%]
Duration: 25 minutes 37 seconds
1 1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10, MET: Kazaross XG2


For money:





White is Player 2

score: 0
pip: 164
Unlimited Game
pip: 137
score: 0

Blue is Player 1
XGID=-A-aBbDBB-b-bB---bab-baA-A:0:0:1:53:0:0:0:0:10
Blue to play 53

1.Rollout1Bar/22* 23/18* eq: +0.401
Player:
Opponent:
55.37% (G:28.62% B:0.86%)
44.63% (G:10.07% B:0.44%)
Conf.: ± 0.010 (+0.391...+0.410) - [100.0%]
Duration: 1 hour 53 minutes
2.Rollout1Bar/22* 6/1eq: +0.340 (-0.061)
Player:
Opponent:
53.77% (G:30.15% B:0.65%)
46.23% (G:11.21% B:0.54%)
Conf.: ± 0.011 (+0.328...+0.351) - [0.0%]
Duration: 1 hour 45 minutes
3.Rollout2Bar/20 23/20eq: +0.289 (-0.112)
Player:
Opponent:
57.09% (G:16.57% B:0.31%)
42.91% (G:8.91% B:0.38%)
Conf.: ± 0.014 (+0.275...+0.303) - [0.0%]
Duration: 21 minutes 50 seconds
1 5184 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller

2 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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