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OtB, RO, etc.

Posted By: Chuck Bower
Date: Saturday, 27 February 2010, at 9:29 p.m.

In Response To: Doubles Doubling Decision from Pitt (Chuck Bower)

Sean Garber and I were Blue (me doing the rolling this game). Richard Munitz (rolling) and Brent Cohen were playing the White checkers. Sean told me we were up by 4 pips and felt we had a strong cube. I asked him to verify (I was a bit in a fog) the difference and I counted our side. I quickly gave us 2 pips for the extra checker off but forgot to subtract 1 for the gap. Leading by (effective) 6 with 51 total looked like a clear cube. Let them work out the T/P decision. Rich said he was sure they had a take and asked Brent for his opinion. Brent hemmed and hawed a bit, not liking it but when they discussed "would you rather trail 3-away Crawford?" he decided taking was better. (Of course they recubed for the match.) I don't remember the rolls but I recall I got a better toss just about every turn compared to Rich. I think I eventually rolled a big double and we didn't have to take every last checker off.

My old (0.14) GNU-bg said ND+T even at 4-ply. I don't have any special bearoff DB attached.

BTW, the emg's are: ND = 0.702; D+T = 0.768; D+P = 1.000.

The score (after 0 games) is: JellyFish 4, Player2 5 (match to 7 points)

Move number 4: Player2 to play 24

Pip counts: JellyFish 55, Player2 51
Position ID: rd0DAMB0ewAAAA Match ID: cAnxAEAAKAAA

• Player2 doubles

Cube decision
Rollout cubeless MWC		68.114%	(Money: +0.4447)
Cubeful equities:
1.	Double, take	72.171%
2.	Double, pass	75.077%	2.906%
3.	No double	71.337%	-0.834%
Proper cube action:		Double, take
Rollout details
Win W g W bg Lose L g L bg Cubeless Cubeful Centered 1-cube 0.7223 0.0000 0.0000 - 0.2777 0.0000 0.0000 68.114% 71.337% Standard error 0.0000 0.0000 0.0000 - 0.0000 0.0000 0.0000 0.001% 0.007% Player JellyFish owns 2-cube 0.7217 0.0000 0.0000 - 0.2783 0.0000 0.0000 81.036% 72.171% Standard error 0.0000 0.0000 0.0000 - 0.0000 0.0000 0.0000 0.001% 0.001%
Full cubeful rollout with var.redn.
17335 games, Mersenne Twister dice gen. with seed 861227456 and quasi-random dice
Play: supremo 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 16 more moves within equity 0.32
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]

Messages In This Thread

• Doubles Doubling Decision from Pitt
  Chuck Bower -- Friday, 26 February 2010, at 2:13 a.m.
  • Doubles Doubling Decision from Pitt
    Stick -- Friday, 26 February 2010, at 2:37 a.m.
  • Doubles Doubling Decision from Pitt
    John O'Hagan -- Friday, 26 February 2010, at 3:16 a.m.
    • Doubles Doubling Decision from Pitt
      neilkaz -- Friday, 26 February 2010, at 4:07 a.m.
  • Doubles Doubling Decision from Pitt
    lenny -- Saturday, 27 February 2010, at 2:16 a.m.
  • Doubles Doubling Decision from Pitt
    Martin -- Saturday, 27 February 2010, at 12:20 p.m.
  • OtB, RO, etc.
    Chuck Bower -- Saturday, 27 February 2010, at 9:29 p.m.