BGonline.org Forums

41S-11e-51 and 41S-22E-51: Rollout Results Posted

Posted By: Paul Weaver
Date: Wednesday, 16 February 2011, at 3:21 p.m.

In Response To: 41S-11e-51 and 41S-22E-51 (Paul Weaver)

Nack already gave one reason that T (the stacking play, 13/8 9/8) is better in 41S-11e-51 than in 41S-22E-51: "As Dmitriy's rollout for right-hand position 41S-22E-51 is such a close decision at [B T13] <10, I conclude that T (sTack/Tower, 13/8 9/8) is a little better in 41S-11e-51 (your left-hand variant). With a doubly reinforced 8pt, Blue is more likely to be able to attack back checkers that are split (rather than anchored), starting with the immediate threat of 53 and odd-number doublets, and he especially doesn't want to be on the roof when he rolls one of those jokers. (That seems a less small factor than the net effect of starting Opp's 7pt when she owns her 5pt instead of her 4pt.)"

Here is another reason: If White goes to the 18pt and gets hit loose there, he will have fewer numbers that hit back and/or anchor in 41S-11e-51 than in 41S-22E-51. This is because his 43 is duplicated in 41S-11e-51 (B/18* or B/21 24/21) but not in 41S-22E-51, where 54 anchors.

	is Player 2 score: 0 pip: 163 Money session Jacoby Beaver pip: 162 score: 0 is Player 1
XGID=-a-a--E-CA--eD---c-cb--AA-:0:0:1:15:0:0:3:0:10
to play 15

1.	Rollout1	13/8 9/8	eq: -0.403
	Player: Opponent: 40.44% (G:9.88% B:0.37%) 59.56% (G:16.84% B:0.74%) Conf: ± 0.008 (-0.411...-0.395) Duration: 8 hours 02 minutes
2.	Rollout1	23/18 9/8	eq: -0.408 (-0.005)
	Player: Opponent: 40.93% (G:9.49% B:0.40%) 59.07% (G:18.48% B:0.81%) Conf: ± 0.009 (-0.417...-0.399) Duration: 9 hours 10 minutes
1 10368 Games rolled with Variance Reduction. Moves and cube decisions: 3 ply

eXtreme Gammon Version: 1.21

	is Player 2 score: 0 pip: 159 Money session Jacoby Beaver pip: 162 score: 0 is Player 1
XGID=---b--E-CA--eD---c-c-b-AA-:0:0:1:15:0:0:3:0:10
to play 15

1.	Rollout1	23/18 9/8	eq: -0.395
	Player: Opponent: 41.35% (G:8.63% B:0.36%) 58.65% (G:18.25% B:0.73%) Conf: ± 0.008 (-0.403...-0.387) Duration: 9 hours 24 minutes
2.	Rollout1	13/8 9/8	eq: -0.408 (-0.013)
	Player: Opponent: 40.69% (G:9.23% B:0.37%) 59.31% (G:17.66% B:0.70%) Conf: ± 0.007 (-0.415...-0.401) Duration: 8 hours 42 minutes
1 10368 Games rolled with Variance Reduction. Moves and cube decisions: 3 ply

eXtreme Gammon Version: 1.21

Messages In This Thread

• 41S-11e-51 and 41S-22E-51
  Paul Weaver -- Tuesday, 15 February 2011, at 2:11 p.m.
  • 41S-11e-51 and 41S-22E-51
    Nack Ballard -- Tuesday, 15 February 2011, at 8:59 p.m.
    • Posting Pictures
      KenB -- Tuesday, 15 February 2011, at 9:38 p.m.
      • Posting Pictures
        Nack Ballard -- Tuesday, 15 February 2011, at 9:42 p.m.
  • 41S-11e-51 and 41S-22E-51
    Nack Ballard -- Tuesday, 15 February 2011, at 9:36 p.m.
  • 41S-11e-51 and 41S-22E-51
    Dmitriy Obukhov -- Wednesday, 16 February 2011, at 5:14 a.m.
  • 41S-11e-51 and 41S-22E-51: Rollout Results Posted
    Paul Weaver -- Wednesday, 16 February 2011, at 3:21 p.m.
    • 41S-11e-51 and 41S-22E-51: Rollout Results Posted
      Nack Ballard -- Wednesday, 16 February 2011, at 9:10 p.m.
  • 41S-11e-51 and 41S-22E-51 ALT *RO*
    Dmitriy Obukhov -- Thursday, 17 February 2011, at 12:06 a.m.