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BGonline.org Forums
.... and Stepped Rollout
Posted By: Ian Dunstan In Response To: *** GNUbg 2/2 ply rollout *** (Mislav Radica)
Date: Wednesday, 23 May 2007, at 9:08 a.m.
Mislav asked me to start this one because he wasn't sure of his results. From either rollout, Gnubg clearly thinks this is a big take. Note that full Gnubg 2-ply apparently plays this game better for Blue, making the take larger than my stepped rollout shows.
Cube decision Rollout cubeless equity +0.5979 (Money: +0.6030) Cubeful equities: 1. Double, take +0.8635 2. Double, pass +1.0000 +0.1365 3. No double +0.7909 -0.0726 Proper cube action: Double, take Rollout details
Win W g W bg Lose L g L bg Cubeless Cubeful Centered 1-cube 67.08% 29.79% 3.05% - 32.92% 6.40% 0.29% +0.5979 +0.7909 Standard error 0.17% 0.21% 0.16% - 0.17% 0.09% 0.03% 0.0054 0.0136 Player FeelingBlue owns 2-cube 67.18% 30.49% 3.58% - 32.82% 6.24% 0.33% +1.2109 +0.8635 Standard error 0.23% 0.27% 0.22% - 0.23% 0.12% 0.04% 0.0148 0.0201 Full cubeful rollout with var.redn. 1476 games, Mersenne Twister dice gen. with seed 1064877781 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 12 plies: Play: 0-ply cubeful prune [expert] Cube: 2-ply cubeful prune [world class]
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