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Truncated rollout: Attack or race or prime?

Posted By: Timothy Chow
Date: Wednesday, 14 November 2012, at 1:33 a.m.

In Response To: Attack or race or prime? (Timothy Chow)

With the weaker board and the better prime, I opted for a priming strategy here. But there's plenty of material to carry out a successful attack, and 6/2*/1* certain wins the most gammons. See, however, the variant position in which the spare on the 8pt has been moved back to the midpoint.

		White is Player 2 score: 0 pip: 145 Money session Jacoby pip: 133 score: 0 Blue is Player 1
XGID=-aa--BDBC---cCa--b-cb-Ab--:1:-1:1:41:0:0:1:0:10
Blue to play 41

1.	Rollout1	6/2* 2/1*	eq: +0.254
	Player: Opponent: 62.71% (G:23.89% B:0.91%) 37.29% (G:10.92% B:0.39%) Conf: ± 0.006 (+0.248...+0.260) Duration: 3 minutes 22 seconds
2.	Rollout1	22/18 6/5	eq: +0.177 (-0.077)
	Player: Opponent: 63.04% (G:15.64% B:0.99%) 36.96% (G:11.41% B:0.26%) Conf: ± 0.005 (+0.172...+0.182) Duration: 4 minutes 05 seconds
3.	Rollout1	13/8	eq: +0.175 (-0.079)
	Player: Opponent: 61.81% (G:17.85% B:1.37%) 38.19% (G:11.04% B:0.29%) Conf: ± 0.007 (+0.168...+0.182) Duration: 3 minutes 59 seconds
4.	Rollout1	13/9 6/5	eq: +0.121 (-0.133)
	Player: Opponent: 60.06% (G:18.81% B:1.59%) 39.94% (G:13.46% B:0.45%) Conf: ± 0.007 (+0.114...+0.128) Duration: 3 minutes 21 seconds
1 Truncated at 7 moves using 3 ply. 648 Games rolled with Variance Reduction. Dice Seed: 2 First 2 moves and cube decisions: 3 ply Remaining moves: 2 ply, cube decisions: 3 ply

eXtreme Gammon Version: 1.21

---

Variant:

		White is Player 2 score: 0 pip: 145 Money session Jacoby pip: 138 score: 0 Blue is Player 1
XGID=-aa--BDBB---cDa--b-cb-Ab--:1:-1:1:41:0:0:1:0:10
Blue to play 41

1.	Rollout1	13/8	eq: +0.173
	Player: Opponent: 62.15% (G:17.08% B:1.28%) 37.85% (G:11.46% B:0.26%) Conf: ± 0.006 (+0.167...+0.179) Duration: 4 minutes 26 seconds
2.	Rollout1	6/2* 2/1*	eq: +0.151 (-0.022)
	Player: Opponent: 59.93% (G:21.43% B:0.87%) 40.07% (G:12.45% B:0.42%) Conf: ± 0.006 (+0.145...+0.157) Duration: 3 minutes 29 seconds
3.	Rollout1	13/9 6/5	eq: +0.108 (-0.065)
	Player: Opponent: 60.31% (G:17.10% B:1.20%) 39.69% (G:13.44% B:0.38%) Conf: ± 0.007 (+0.101...+0.115) Duration: 3 minutes 43 seconds
4.	Rollout1	22/18 6/5	eq: +0.092 (-0.081)
	Player: Opponent: 60.76% (G:14.21% B:0.89%) 39.24% (G:13.13% B:0.26%) Conf: ± 0.006 (+0.086...+0.098) Duration: 3 minutes 58 seconds
1 Truncated at 7 moves using 3 ply. 648 Games rolled with Variance Reduction. Dice Seed: 2 First 2 moves and cube decisions: 3 ply Remaining moves: 2 ply, cube decisions: 3 ply

eXtreme Gammon Version: 1.21

Messages In This Thread

• Attack or race or prime?
  Timothy Chow -- Monday, 12 November 2012, at 7:27 p.m.
  • Attack or race or prime?
    neilkaz -- Monday, 12 November 2012, at 11:08 p.m.
  • Attack or race or prime?
    Mr Majestyk -- Tuesday, 13 November 2012, at 12:10 a.m.
  • Attack or race or prime?
    Smcrtorchs -- Tuesday, 13 November 2012, at 9:35 a.m.
    • Attack or race or prime?
      Mr Majestyk -- Tuesday, 13 November 2012, at 11:12 a.m.
  • Attack or race or prime?
    ah_clem -- Tuesday, 13 November 2012, at 2:57 p.m.
  • Truncated rollout: Attack or race or prime?
    Timothy Chow -- Wednesday, 14 November 2012, at 1:33 a.m.
    • Truncated rollout: Attack or race or prime?
      Daniel Murphy -- Friday, 16 November 2012, at 12:36 a.m.