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Rollout

Posted By: Timothy Chow
Date: Friday, 29 December 2023, at 2:56 a.m.

In Response To: Best way to contain White's checker? (Timothy Chow)

The rollout indicates that 20/15 20/14 and 15/10 14/8 are fairly close, but it's important to understand, as Dmitriy points out, that 15/10 14/8 is the play that wins more gammons while 20/15 20/14 wins more games. So at gammon go, which is the score at which I actually encountered this position, 15/10 14/8 is the standout play.

By the way, XG 3-ply and XG 4-ply both favor 20/15 20/14.

		White is Player 2 score: 0 pip: 111 Unlimited Game pip: 118 score: 0 Blue is Player 1
XGID=-aBBBBB--A--b-AA-bccB--bb-:1:-1:1:65:0:0:0:0:10
Blue to play 65

1.	Rollout1	15/10 14/8	eq: +0.389
	Player: Opponent: 67.73% (G:20.21% B:0.26%) 32.27% (G:4.09% B:0.08%) Conf.: ± 0.006 (+0.383...+0.396) - [100.0%] Duration: 1 minute 42 seconds
2.	Rollout1	20/15 20/14	eq: +0.356 (-0.033)
	Player: Opponent: 68.65% (G:13.41% B:0.34%) 31.35% (G:4.10% B:0.07%) Conf.: ± 0.007 (+0.350...+0.363) - [0.0%] Duration: 1 minute 49 seconds
3.	Rollout1	15/9 14/9	eq: +0.352 (-0.037)
	Player: Opponent: 66.77% (G:17.11% B:0.25%) 33.23% (G:3.25% B:0.08%) Conf.: ± 0.006 (+0.346...+0.358) - [0.0%] Duration: 1 minute 28 seconds
4.	Rollout1	15/4	eq: +0.289 (-0.101)
	Player: Opponent: 63.65% (G:19.97% B:0.36%) 36.35% (G:5.02% B:0.12%) Conf.: ± 0.007 (+0.281...+0.296) - [0.0%] Duration: 1 minute 30 seconds
5.	Rollout1	14/3	eq: +0.286 (-0.103)
	Player: Opponent: 63.39% (G:20.77% B:0.53%) 36.61% (G:5.23% B:0.13%) Conf.: ± 0.008 (+0.278...+0.294) - [0.0%] Duration: 1 minute 29 seconds
6.	Rollout1	15/10 9/3	eq: +0.285 (-0.104)
	Player: Opponent: 63.41% (G:20.69% B:0.44%) 36.59% (G:5.24% B:0.11%) Conf.: ± 0.007 (+0.278...+0.292) - [0.0%] Duration: 1 minute 33 seconds
7.	Rollout1	14/8 9/4	eq: +0.285 (-0.104)
	Player: Opponent: 63.26% (G:20.93% B:0.55%) 36.74% (G:5.13% B:0.13%) Conf.: ± 0.007 (+0.278...+0.292) - [0.0%] Duration: 1 minute 26 seconds
1 1296 Games rolled with Variance Reduction. Dice Seed: 271828 Moves: 3-ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.19.211.pre-release

Messages In This Thread

• Best way to contain White's checker?
  Timothy Chow -- Wednesday, 27 December 2023, at 2:52 a.m.
  • Best way to contain White's checker?
    Colin Owen -- Wednesday, 27 December 2023, at 7:02 p.m.
    • Best way to contain White's checker?
      Timothy Chow -- Thursday, 28 December 2023, at 1:21 a.m.
  • Best way to contain White's checker?
    Dmitriy Obukhov -- Thursday, 28 December 2023, at 11:57 a.m.
  • Rollout
    Timothy Chow -- Friday, 29 December 2023, at 2:56 a.m.