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Posted By: Igor
Date: Tuesday, 19 March 2013, at 11:35 p.m.

In Response To: Understanding Backgammon Position #3 (Igor)

Woolse'y choice of 16/11 is not even in top 2:

White is Player 2 score: 0 pip: 148 Unlimited Game Jacoby pip: 112 score: 0 Blue is Player 1 XGID=-a-bBCCC-B--b---Bb-cbb-a--:0:0:1:41:0:0:1:0:10 Blue to play 41

1. Rollout1 7/2 eq: +0.852 Player: Opponent: 70.56% (G:18.35% B:0.82%) 29.44% (G:6.44% B:0.23%) Conf.: ± 0.004 (+0.847...+0.856) - [100.0%] Duration: 2 hours 30 minutes 2. Rollout1 6/1* eq: +0.816 (-0.035) Player: Opponent: 70.05% (G:17.53% B:0.68%) 29.95% (G:6.32% B:0.22%) Conf.: ± 0.006 (+0.811...+0.822) - [0.0%] Duration: 2 hours 49 minutes 3. Rollout1 16/11 eq: +0.810 (-0.041) Player: Opponent: 72.25% (G:17.28% B:0.85%) 27.75% (G:5.11% B:0.16%) Conf.: ± 0.005 (+0.806...+0.815) - [0.0%] Duration: 2 hours 03 minutes 4. Rollout1 7/6 5/1* eq: +0.810 (-0.042) Player: Opponent: 69.30% (G:18.17% B:0.72%) 30.70% (G:6.41% B:0.23%) Conf.: ± 0.006 (+0.804...+0.816) - [0.0%] Duration: 2 hours 36 minutes 5. Rollout2 6/2 5/4 eq: +0.802 (-0.050) Player: Opponent: 69.46% (G:18.35% B:0.85%) 30.54% (G:7.11% B:0.23%) Conf.: ± 0.006 (+0.796...+0.808) - [0.0%] Duration: 3 hours 10 minutes 1 5184 Games rolled with Variance Reduction. Dice Seed: 34532937 Moves: 4-ply, cube decisions: XG Roller+ 2 5184 Games rolled with Variance Reduction. Dice Seed: 4880111 Moves: 4-ply, cube decisions: XG Roller+

eXtreme Gammon Version: 2.10

However with the cube previously turned it does make sense:

White is Player 2 score: 0 pip: 148 Unlimited Game Jacoby pip: 112 score: 0 Blue is Player 1 XGID=-a-bBCCC-B--b---Bb-cbb-a--:1:-1:1:41:0:0:1:0:10 Blue to play 41

1. Rollout1 16/11 eq: +0.478 Player: Opponent: 72.57% (G:17.51% B:0.82%) 27.43% (G:5.33% B:0.18%) Conf.: ± 0.006 (+0.472...+0.484) - [100.0%] Duration: 35 minutes 13 seconds 2. Rollout1 7/2 eq: +0.439 (-0.039) Player: Opponent: 70.68% (G:19.06% B:0.87%) 29.32% (G:6.58% B:0.25%) Conf.: ± 0.006 (+0.433...+0.446) - [0.0%] Duration: 32 minutes 38 seconds 3. Rollout1 6/1* eq: +0.406 (-0.072) Player: Opponent: 69.96% (G:17.55% B:0.75%) 30.04% (G:6.48% B:0.22%) Conf.: ± 0.007 (+0.399...+0.414) - [0.0%] Duration: 34 minutes 42 seconds 4. Rollout1 7/6 5/1* eq: +0.403 (-0.075) Player: Opponent: 69.48% (G:18.28% B:0.72%) 30.52% (G:6.45% B:0.23%) Conf.: ± 0.006 (+0.397...+0.409) - [0.0%] Duration: 33 minutes 15 seconds 5. Rollout1 6/2 5/4 eq: +0.400 (-0.078) Player: Opponent: 69.51% (G:18.44% B:0.83%) 30.49% (G:7.18% B:0.25%) Conf.: ± 0.006 (+0.393...+0.406) - [0.0%] Duration: 29 minutes 01 second 1 1296 Games rolled with Variance Reduction. Dice Seed: 50867687 Moves: 4-ply, cube decisions: XG Roller+

eXtreme Gammon Version: 2.10

Messages In This Thread

• Understanding Backgammon Position #3
  Igor -- Monday, 18 March 2013, at 10:41 p.m.
  • Understanding Backgammon Position #3
    Timothy Chow -- Monday, 18 March 2013, at 11:55 p.m.
    • Understanding Backgammon Position #3
      Chase -- Tuesday, 19 March 2013, at 1:37 a.m.
      • Understanding Backgammon Position #3
        lenny -- Tuesday, 19 March 2013, at 2:11 a.m.
      • Understanding Backgammon Position #3
        Timothy Chow -- Tuesday, 19 March 2013, at 2:56 a.m.
  • Understanding Backgammon Position #3
    Chase -- Tuesday, 19 March 2013, at 1:32 a.m.
    • Understanding Backgammon Position #3
      Igor -- Tuesday, 19 March 2013, at 1:48 a.m.
  • Understanding Backgammon Position #3
    kinchan -- Tuesday, 19 March 2013, at 5:17 a.m.
    • Understanding Backgammon Position #3
      Igor -- Tuesday, 19 March 2013, at 3:15 p.m.
  • Understanding Backgammon Position #3
    neilkaz -- Tuesday, 19 March 2013, at 4:23 p.m.
  • Understanding Backgammon Position #3
    Chuck Bower -- Tuesday, 19 March 2013, at 8:38 p.m.
    • Understanding Backgammon Position #3
      Igor -- Tuesday, 19 March 2013, at 9:02 p.m.
      • Understanding Backgammon Position #3
        Timothy Chow -- Tuesday, 19 March 2013, at 11:24 p.m.
        • Understanding Backgammon Position #3
          Igor -- Tuesday, 19 March 2013, at 11:28 p.m.
          • Understanding Backgammon Position #3
            Matt Cohn-Geier -- Wednesday, 20 March 2013, at 12:07 a.m.
            • Understanding Backgammon Position #3
              Matt Cohn-Geier -- Wednesday, 20 March 2013, at 1:08 a.m.
              • Beautiful mind +1
                svilo -- Wednesday, 20 March 2013, at 2:38 a.m.
          • Understanding Backgammon Position #3
            Timothy Chow -- Wednesday, 20 March 2013, at 12:15 a.m.
  • RO
    Igor -- Tuesday, 19 March 2013, at 11:35 p.m.
    • So, what went wrong?
      Taper_Mike -- Wednesday, 20 March 2013, at 3:04 a.m.
      • So, what went wrong?
        Igor -- Wednesday, 20 March 2013, at 3:28 a.m.
      • So, what went wrong?
        Timothy Chow -- Thursday, 21 March 2013, at 1:14 a.m.
    • RO - Gnubg
      Daniel Murphy -- Wednesday, 20 March 2013, at 3:57 a.m.
  • MCG's analysis
    Timothy Chow -- Wednesday, 20 March 2013, at 11:46 p.m.
    • MCG's analysis
      Matt Cohn-Geier -- Thursday, 21 March 2013, at 4:12 a.m.
      • MCG's analysis
        Timothy Chow -- Thursday, 21 March 2013, at 5:46 p.m.
        • XGR++
          Petter Bengtsson -- Thursday, 21 March 2013, at 5:55 p.m.
        • MCG's analysis
          Matt Cohn-Geier -- Thursday, 21 March 2013, at 6:03 p.m.
          • MCG's analysis
            Timothy Chow -- Thursday, 21 March 2013, at 11:16 p.m.
            • MCG's analysis
              Matt Cohn-Geier -- Friday, 22 March 2013, at 4:53 a.m.
        • Rollouts of Timothy's variations
          Chase -- Thursday, 21 March 2013, at 9:19 p.m.
          • Rollouts of Timothy's variations
            Timothy Chow -- Thursday, 21 March 2013, at 11:09 p.m.
            • Rollouts of Timothy's variations
              Casper van der Tak -- Friday, 22 March 2013, at 12:30 a.m.
            • Rollouts of Timothy's variations
              Timothy Chow -- Friday, 22 March 2013, at 5:05 p.m.