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Relevant Second Roll Positions

Posted By: Paul Weaver
Date: Wednesday, 22 January 2014, at 4:26 p.m.

In Response To: Advanced Backgammon #7 (Igor)

If you are familiar with 51$-32 and 51$-52, then it will help you figure out the best play in 32D-51$-21D. The XG book rollout results (thanks to Neil Kazaross and GameSite 2000) of 51$-32 and 51$-52 are posted below. Few folks slot with opening 51, so we do not see these two positions often.

		White is Player 2 score: 0 pip: 161 Unlimited Game Jacoby Beaver pip: 167 score: 0 Blue is Player 1
XGID=-b----E-C---dE---d-da---B-:0:0:1:23:0:0:3:0:10
Blue to play 23

1.	Book1	13/10 6/4	eq: -0.218
	Player: Opponent: 45.26% (G:12.71% B:0.68%) 54.74% (G:17.47% B:1.34%) Conf.: ± 0.003 (-0.221...-0.215) - [61.8%]
2.	Book1	24/21 13/11	eq: -0.219 (-0.001)
	Player: Opponent: 45.18% (G:11.49% B:0.61%) 54.82% (G:16.43% B:0.92%) Conf.: ± 0.003 (-0.221...-0.216) - [38.2%]
3.	Book2	24/22 13/10	eq: -0.225 (-0.007)
	Player: Opponent: 44.83% (G:11.93% B:0.63%) 55.17% (G:16.43% B:0.91%) Conf.: ± 0.004 (-0.229...-0.222) - [0.0%]
4.	Book3	13/11 13/10	eq: -0.242 (-0.024)
	Player: Opponent: 44.50% (G:12.78% B:0.68%) 55.50% (G:17.23% B:1.24%) Conf.: ± 0.012 (-0.254...-0.230) - [0.0%]
1 Generated by Neil Kazaross on 4/22/2010 using eXtreme Gammon 1.13 46656 Games rolled with Variance Reduction. Dice Seed: Random Moves and cube decisions: 4-ply 2 Generated by Neil Kazaross on 4/22/2010 using eXtreme Gammon 1.13 31104 Games rolled with Variance Reduction. Dice Seed: Random Moves and cube decisions: 4-ply 3 Generated by Neil Kazaross on 4/22/2010 using eXtreme Gammon 1.13 5184 Games rolled with Variance Reduction. Dice Seed: Random Moves and cube decisions: 3-ply

eXtreme Gammon Version: 2.10

		White is Player 2 score: 0 pip: 161 Unlimited Game Jacoby Beaver pip: 167 score: 0 Blue is Player 1
XGID=-b----E-C---dE---d-da---B-:0:0:1:25:0:0:3:0:10
Blue to play 25

1.	Book1	13/8 6/4	eq: -0.231
	Player: Opponent: 44.83% (G:12.48% B:0.56%) 55.17% (G:17.06% B:0.94%) Conf.: ± 0.007 (-0.238...-0.224) - [78.0%]
2.	Book1	24/22 13/8	eq: -0.235 (-0.004)
	Player: Opponent: 44.82% (G:11.71% B:0.51%) 55.18% (G:16.82% B:0.67%) Conf.: ± 0.007 (-0.242...-0.228) - [22.0%]
3.	Book1	13/11 13/8	eq: -0.257 (-0.026)
	Player: Opponent: 44.23% (G:12.75% B:0.64%) 55.77% (G:17.68% B:0.99%) Conf.: ± 0.007 (-0.264...-0.250) - [0.0%]
1 Generated by GameSite 2000, Ltd on 2/26/2011 using eXtreme Gammon 2.00 10368 Games rolled with Variance Reduction. Dice Seed: 77390818 Moves: 2-ply, cube decisions: 3-ply Red

eXtreme Gammon Version: 2.10

Messages In This Thread

• Advanced Backgammon #7
  Igor -- Wednesday, 22 January 2014, at 3:41 p.m.
  • Relevant Second Roll Positions
    Paul Weaver -- Wednesday, 22 January 2014, at 4:26 p.m.
    • Relevant Second Roll Positions
      Igor -- Wednesday, 22 January 2014, at 5:04 p.m.
    • 51$-52 [S $1 D14]
      eXtreme Gammon -- Sunday, 26 January 2014, at 8:26 p.m.
      • 51$-52 [S=$] "^46
        Nack Ballard -- Monday, 27 January 2014, at 3:29 a.m.
        • 51$-52 / My 4 ply XG2 RO
          David Rockwell -- Wednesday, 29 January 2014, at 6:24 p.m.
          • 51$-52 — Index to Rollouts
            Taper_Mike -- Thursday, 30 January 2014, at 6:39 p.m.
  • Advanced Backgammon #7
    Keene -- Wednesday, 22 January 2014, at 6:30 p.m.
  • Nactations of 32D-51$-21
    Taper_Mike -- Thursday, 23 January 2014, at 1:27 a.m.
    • Nactations of 32D-51$-21
      Igor -- Thursday, 23 January 2014, at 2:45 a.m.
      • Nactations of 32D-51$-21
        Taper_Mike -- Thursday, 23 January 2014, at 3:48 a.m.
  • Advanced Backgammon #7
    Taper_Mike -- Thursday, 23 January 2014, at 6:23 p.m.
    • Advanced Backgammon #7
      Igor -- Thursday, 23 January 2014, at 6:57 p.m.
      • Advanced Backgammon #7
        Taper_Mike -- Thursday, 23 January 2014, at 7:16 p.m.
  • Advanced Backgammon #7
    David Presser -- Thursday, 23 January 2014, at 6:53 p.m.
  • Advanced Backgammon #7
    Nack Ballard -- Friday, 24 January 2014, at 9:58 a.m.
    • Advanced Backgammon #7
      Igor -- Friday, 24 January 2014, at 4:01 p.m.
  • Advanced Backgammon #7 -- Rollouts
    Igor -- Friday, 24 January 2014, at 4:17 p.m.
    • 32D-51$-21 — No Jacoby, No Beavers — 3-ply XG2 Rollout
      Taper_Mike -- Tuesday, 28 January 2014, at 9:15 p.m.