Eleven checkers in the zone, a three-point board, a 20+ pip lead,
and the back checkers mostly escaped---these factors would often
be enough to justify a double. But O has a strong board, and has
a good chance of anchoring and ending the blitz. According to the
rollout below, it's not a double yet, despite the high gammon win rate.
Analyzed in Rollout
No double
Player Winning Chances: 54.16% (G:31.29% B:0.52%)
Opponent Winning Chances: 45.84% (G:16.24% B:0.97%)
Double/Take
Player Winning Chances: 54.52% (G:31.45% B:0.48%)
Opponent Winning Chances: 45.48% (G:16.34% B:1.01%)
Cubeful Equities:
No double: +0.308
Double/Take: +0.123 (-0.185)
Double/Pass: +1.000 (+0.692)
Best Cube action: No double / Take
Percentage of wrong pass needed to make the double decision right: 21.1%
Rollout:
1296 Games rolled with Variance Reduction.
Dice Seed: 271828
Moves: 3-ply, cube decisions: XG Roller
Confidence No Double: ± 0.014 (+0.294..+0.321)
Confidence Double: ± 0.022 (+0.101..+0.144)
eXtreme Gammon Version: 2.19.211.pre-release
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Tim Chow