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OTB, rollout, etc
Posted By: neilkaz In Response To: Spoiler Alert: Blue EPC given. (Bob Koca)
Date: Tuesday, 6 January 2009, at 8:30 p.m.
Here I remembered Trice's method for this pos-type. White's EPC is (6 x 3.5) + straggler's pips = 38. If I move the strag to the 13 pt, my DB says EPC is 34.0 so 38 is a good number.
My EPC for a 5 roll perfect speed board is (7 x 5) +1= 36 but I certainly don't have a perfect speed board. At worst I felt my EPC would be 38 and with an even EPC I have a cube from the center.
Other considerations:
1) I almost cubed last turn and certainly didn't get any worse on the exchange, IMO.
2) Lets look ahead, I take 2 off. Now my opp needs to roll 11 or higher to really scare me.
3) I think my opp will properly pass if she rolls a small number next shake.
So I cubed and was happy to see a bad pass from my opp.
The score (after 0 games) is: gnubg 0, ntk 0 (match to 8 points)
Move number 3: ntk on roll, cube decision?
gnubg 22
ntk 23 Position ID: HwAggLsNAAAAAA Match ID: cAkAAQAAAAAA
• ntk doubles
Cube decision Rollout cubeless equity +0.426 (Money: +0.426) Cubeful equities: 1. Double, take +0.816 2. Double, pass +1.000 +0.184 3. No double +0.724 -0.092 Proper cube action: Double, take Rollout details
Win W g W bg Lose L g L bg Cubeless Cubeful Centered 1-cube 0.713 0.000 0.000 - 0.287 0.000 0.000 +0.426 +0.724 Standard error 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.001 Player gnubg owns 2-cube 0.714 0.000 0.000 - 0.286 0.000 0.000 +0.901 +0.816 Standard error 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.001 Full cubeful rollout with var.redn. 12960 games, Mersenne Twister dice gen. with seed 809520731 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] Here's a $$$ ref pos for you all.
The score (after 0 games) is: gnubg 0, ntk 0
Move number 3: ntk on roll, cube decision?
gnubg 24
ntk 23 Position ID: HwCAgLsNAAAAAA Match ID: cAkAAAAAAAAA
• ntk doubles
Cube decision Rollout cubeless equity +0.558 Cubeful equities: 1. Double, pass +1.000 2. Double, take +1.050 +0.050 3. No double +0.824 -0.176 Proper cube action: Double, pass Rollout details
Win W g W bg Lose L g L bg Cubeless Cubeful Centered 1-cube 0.779 0.000 0.000 - 0.221 0.000 0.000 +0.558 +0.824 Standard error 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.001 Player gnubg owns 2-cube 0.782 0.000 0.000 - 0.218 0.000 0.000 +1.129 +1.050 Standard error 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.001 Full cubeful rollout with var.redn. 12960 games, Mersenne Twister dice gen. with seed 809520731 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]
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