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21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout

Posted By: Taper_Mike
Date: Monday, 28 July 2014, at 11:12 a.m.

In Response To: 21$-66B-51P-42P-42 – A Related Variant (Taper_Mike)

		White is Player 2 score: 0 pip: 137 Unlimited Game pip: 158 score: 0 Blue is Player 1
XGID=-----BDbC---cD---bbd-b--B-:0:0:1:42:0:0:0:0:10
Blue to play 42

1.	Rollout1	24/22 24/20	eq: -0.6465
	Player: Opponent: 34.80% (G:6.43% B:0.26%) 65.20% (G:20.55% B:0.45%) Conf.: ±0.0034 (-0.6499...-0.6430) - [0.0%] Duration: 2 hours 17 minutes
2.	Rollout1	8/4 6/4	eq: -0.6608 (-0.0143)
	Player: Opponent: 33.79% (G:7.64% B:0.28%) 66.21% (G:18.10% B:0.62%) Conf.: ±0.0026 (-0.6634...-0.6581) - [100.0%] Duration: 2 hours 41 minutes
3.	Rollout2	24/20 6/4	eq: -0.7054 (-0.0590)
	Player: Opponent: 34.32% (G:7.76% B:0.29%) 65.68% (G:23.63% B:0.75%) Conf.: ±0.0092 (-0.7146...-0.6963) - [0.0%] Duration: 24 minutes 13 seconds
4.	Rollout2	24/22 8/4	eq: -0.7203 (-0.0738)
	Player: Opponent: 33.95% (G:7.95% B:0.33%) 66.05% (G:23.78% B:0.79%) Conf.: ±0.0087 (-0.7290...-0.7116) - [0.0%] Duration: 22 minutes 45 seconds
5.	Rollout2	24/22 13/9	eq: -0.7357 (-0.0893)
	Player: Opponent: 33.29% (G:7.63% B:0.30%) 66.71% (G:22.36% B:0.95%) Conf.: ±0.0087 (-0.7445...-0.7270) - [0.0%] Duration: 23 minutes 41 seconds
1 31104 Games rolled with Variance Reduction. Dice Seed: 67147402 Moves: 3-ply, cube decisions: XG Roller 2 5184 Games rolled with Variance Reduction. Dice Seed: 67147402 Moves: 3-ply, cube decisions: XG Roller

Rollout by Taper_Mike 2014-Jul-28 eXtreme Gammon Version: 2.10.199.2658 21$-66B-51P-42P-42-n-tm.xgp n[U P14 E59 c74 Z89] "<=31*5 n[U P19 E57 c63 Z90] "&e

eXtreme Gammon Version: 2.10

Two Up Is Still the Winner

Compared to my rollout of the original position, making the 4pt has gained in equity, but not quite enough to overtake playing two checkers up from the 24pt.

Unstacking the midpoint is a much lower priority when it only has four checkers. Plays like N = 13/9 6/4 and Z = 24/22 13/9 are much worse here than in the OP.

Mike

 

21$-66B-51P-42P-42 — Unlimited Games

Bot	Seed	Equity	Nacbracs	Link
GnuBg 1.02 2-ply Trunc	721270917	–664.194	n[U P7 E54 c65 Z82] '/0.360t	Taper_Mike
XG 2.10 3-ply, Cubes: XGR	67147402	–646.5	n[U P14 E59 c74 Z89] "<=31*5	Taper_Mike (above)
XG 2.10 XGR++ Eval	[XGR++ seed]	–642.4	n[U P19 E57 c63 Z90] "&e	Taper_Mike

Key: C = Cross [24/20, 8/6], c = cross [24/22, 8/4], E = Each [24/20, 6/4], P = Point [8/4, 6/4], S = Split and down [24/20, 13/11], U = Up [24/22, 24/20], Z = Reverse split and down [24/22, 13/9]

Nactation Tutorial • Explanation of nacbracs • Nacbracs for cube actions

Messages In This Thread

• Early 42 to play
  Ian Dunstan -- Thursday, 24 July 2014, at 10:53 a.m.
  • Early 42 to play
    Keene -- Thursday, 24 July 2014, at 2:49 p.m.
  • Early 42 to play
    Timothy Chow -- Thursday, 24 July 2014, at 5:20 p.m.
    • Variation
      Ian Dunstan -- Saturday, 26 July 2014, at 2:46 a.m.
  • Early 42 to play
    Sam Pottle -- Friday, 25 July 2014, at 3:22 a.m.
    • Early 42 to play
      neilkaz -- Friday, 25 July 2014, at 3:35 p.m.
  • Early 42 to play
    Fatboy -- Friday, 25 July 2014, at 5:59 a.m.
  • Early 42 to play
    Ian Shaw -- Friday, 25 July 2014, at 6:53 a.m.
    • Early 42 to play
      neilkaz -- Friday, 25 July 2014, at 3:33 p.m.
    • Early 42 to play
      Timothy Chow -- Friday, 25 July 2014, at 5:08 p.m.
      • Early 42 to play
        Taper_Mike -- Sunday, 27 July 2014, at 6:44 a.m.
  • Rollout
    Ian Dunstan -- Saturday, 26 July 2014, at 2:12 a.m.
    • Wow**NM**
      Fatboy -- Saturday, 26 July 2014, at 10:24 p.m.
    • 42P-31P-66B-42 – Unlimited Games – 3-ply XG2 Rollout
      Taper_Mike -- Monday, 28 July 2014, at 11:02 a.m.
  • 21$-66B-51P-42P-42 – A Related Variant
    Taper_Mike -- Sunday, 27 July 2014, at 7:47 a.m.
    • 21$-66B-51P-42P-42 – A Related Variant
      Timothy Chow -- Sunday, 27 July 2014, at 2:58 p.m.
    • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
      Taper_Mike -- Monday, 28 July 2014, at 11:12 a.m.
      • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
        Ian Dunstan -- Monday, 28 July 2014, at 1:09 p.m.
        • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
          Timothy Chow -- Monday, 28 July 2014, at 5:26 p.m.
          • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
            Ian Dunstan -- Tuesday, 29 July 2014, at 7:51 a.m.
            • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
              Tom Keith -- Tuesday, 29 July 2014, at 12:39 p.m.
              • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
                Ian Dunstan -- Tuesday, 29 July 2014, at 1:06 p.m.
            • 21$-66B-51P-42P-42 – Unlimited Games – 3-ply XG2 Rollout
              Timothy Chow -- Wednesday, 30 July 2014, at 12:40 a.m.