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Answer: Memorizing two-roll positions

Posted By: Timothy Chow
Date: Thursday, 21 February 2013, at 2:50 a.m.

In Response To: Memorizing two-roll positions (Timothy Chow)

I redoubled here. Matussek's formula is quite accurate here but I still wasn't sure about the cube action. I redoubled, which is a big error.

If we replace Blue's two checkers on the 4pt with a single checker on the 5pt plus a single checker on the 3pt then the redouble is clear.





White is Player 2

score: 0
pip: 11
Money session
Jacoby
pip: 11
score: 0

Blue is Player 1
XGID=-AA-B---------------aa-a--:1:1:1:00:0:0:1:0:10
Blue on roll, cube action?


Analyzed in 4 ply
Player Winning Chances: 63.72% (G: 0.00% B: 0.00%)
Opponent Winning Chances: 36.28% (G: 0.00% B: 0.00%)
Cubeless Equities
No Redouble:+0.274
Redouble:+0.549
Cubeful Equities
No Redouble:+0.374
Redouble/Take:+0.290 (-0.084)
Redouble/Drop:+1.000 (+0.626)
Best Cube action: No Redouble / Take

eXtreme Gammon Version: 1.21

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