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64R-52H-54@-61 — Unlimited Games — 2-ply GnuBg Trunc

Posted By: Taper_Mike
Date: Wednesday, 28 August 2013, at 7:49 a.m.

In Response To: 501 Essential Backgammon Problems #40 -- RO + Variant (Igor)

64R-52H-54@-61
Position ID: 4HPwAQPg88gBMA Match ID: cAkHAAAAAAAA

#		Ply	Move	Equity
•	1	R	11/4	-0.290541
			0.433211 0.083781 0.001891 - 0.566789 0.144382 0.004716 -0.197005 -0.290541 0.000729 0.000878 0.000053 - 0.000729 0.001309 0.000102 0.001584 0.002835
			Truncated cubeful rollout (depth 5) with var.redn.
			360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice
			Play: world class 2-ply cubeful prune [world class]
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			Cube: 2-ply cubeful prune [world class]
			Different evaluations after 2 plies:
			Play: 1-ply cubeful prune
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Cube: 2-ply cubeful prune [world class]
	2	R	13/7 8/7	-0.315924 ( -0.025383)
			0.423158 0.087591 0.002067 - 0.576842 0.142335 0.004975 -0.211335 -0.315924 0.000721 0.000979 0.000071 - 0.000721 0.001070 0.000135 0.001791 0.003384
			Truncated cubeful rollout (depth 5) with var.redn.
			360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice
			Play: world class 2-ply cubeful prune [world class]
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			Cube: 2-ply cubeful prune [world class]
			Different evaluations after 2 plies:
			Play: 1-ply cubeful prune
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Cube: 2-ply cubeful prune [world class]
	3	R	24/18 11/10	-0.329956 ( -0.039415)
			0.422802 0.084485 0.002024 - 0.577198 0.149944 0.005793 -0.223625 -0.329956 0.000701 0.000901 0.000059 - 0.000701 0.001181 0.000123 0.001792 0.002968
			Truncated cubeful rollout (depth 5) with var.redn.
			360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice
			Play: world class 2-ply cubeful prune [world class]
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			Cube: 2-ply cubeful prune [world class]
			Different evaluations after 2 plies:
			Play: 1-ply cubeful prune
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Cube: 2-ply cubeful prune [world class]
	4	R	24/23 24/18	-0.334052 ( -0.043511)
			0.424462 0.073017 0.001594 - 0.575538 0.147747 0.005007 -0.229219 -0.334052 0.000742 0.000622 0.000037 - 0.000742 0.001171 0.000101 0.001677 0.003131
			Truncated cubeful rollout (depth 5) with var.redn.
			360 games, Mersenne Twister dice gen. with seed 725340825 and quasi-random dice
			Play: world class 2-ply cubeful prune [world class]
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Skip pruning for 1-ply moves.
			Cube: 2-ply cubeful prune [world class]
			Different evaluations after 2 plies:
			Play: 1-ply cubeful prune
			keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
			Cube: 2-ply cubeful prune [world class]

Annotation

Truncated Rollout by Taper_Mike
2013-Aug-25
Version GNU Backgammon 0.90-mingw 20120806
64R-52H-54@-61-tm . sgf
[o P25 B39] /0.360t

64R-52H-54@-61 — Unlimited Games

Bot	Seed	Equity	Nacbracs	Link
GnuBg 0.xx 2-ply Trunc	725340825	–290.541	[o P25 B39] /0.360t	Taper_Mike (above)
XG 2.10 XGR++ Eval	[XGR++ seed]	–261.3	[o P18 B29] "&e	Taper_Mike
XG 2.10 3-ply, Cubes: XGR	18260878	–284	j[o B8 P16 U19] "<=25*10 5	Igor Erovenko

The GnuBg trunc does not really add anything new. It just gives me an excuse to put the move sequence in the subject of this post!

The one thing I did notice was how much better B = 24/18 11/10 did in Igor’s rollout compared to to its showing in the GnuBg trunc and XGR++.

Mike

Messages In This Thread

• 501 Essential Backgammon Problems #40
  Igor -- Friday, 23 August 2013, at 10:27 p.m.
  • 501 Essential Backgammon Problems #40
    Taper_Mike -- Saturday, 24 August 2013, at 7:06 a.m.
    • 501 Essential Backgammon Problems #40
      W Womack -- Sunday, 25 August 2013, at 8:56 p.m.
      • 501 Essential Backgammon Problems #40
        W Womack -- Sunday, 25 August 2013, at 8:58 p.m.
        • 501 Essential Backgammon Problems #40
          Taper_Mike -- Monday, 26 August 2013, at 6:11 a.m.
  • 501 Essential Backgammon Problems #40 -- RO + Variant
    Igor -- Monday, 26 August 2013, at 1:43 p.m.
    • 64R-52H-54@-61 — Unlimited Games — 2-ply GnuBg Trunc
      Taper_Mike -- Wednesday, 28 August 2013, at 7:49 a.m.
  • 501 #40 ROs (52D-22@-61)
    Stick -- Friday, 30 August 2013, at 8:07 a.m.