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Closed board bearoff butchery

Posted By: neilkaz
Date: Tuesday, 10 April 2012, at 4:22 p.m.

In Response To: Mochy/Michy v. Larsen/Rex Match File (Stick)

Quite surprised that there was no discussion of that 65 unless they got it right. If you and I were playing there'd not be much discussion either since one of us would rip and the other would say or nod OK or say to rip also.




White is Mochy/Michy

score: 0
pip: 35
9 point match
pip: 52
score: 0

Blue is Rex/Larsen
XGID=aBBBBDB----------------cd-:1:1:1:65:0:0:0:9:10
Blue to play 65

1.XG Roller++6/Off 5/Offeq: +0.3639
Player:
Opponent:
55.44% (G:0.00% B:0.00%)
44.56% (G:0.00% B:0.00%)
2.XG Roller++6/1 6/Offeq: +0.2927 (-0.0712)
Player:
Opponent:
53.79% (G:0.00% B:0.00%)
46.21% (G:0.00% B:0.00%)

eXtreme Gammon Version: 2.03, MET: Kazaross XG2

After the correct 65 folowed by a dance, then they have a fine recube as expected.




White is Player 2

score: 0
pip: 35
9 point match
pip: 41
score: 0

Blue is Player 1
XGID=aBBBBCA----------------cd-:1:1:1:00:0:0:0:9:10
Blue on roll, cube action?

Analyzed in XG Roller++ No redouble Redouble/Take
Player Winning Chances: 73.833% (G:0.000% B:0.000%) 73.818% (G:0.000% B:0.000%)
Opponent Winning Chances: 26.167% (G:0.000% B:0.000%) 26.182% (G:0.000% B:0.000%)
Cubeless Equities +0.4767 +0.9892
Cubeful Equities
No redouble:+0.7507 (-0.0619)
Redouble/Take:+0.8126
Redouble/Pass:+1.0000 (+0.1874)
Best Cube action: Redouble / Take

eXtreme Gammon Version: 2.03, MET: Kazaross XG2

I suspect some of the issues here may be from missapplying "Robertie's Rule of Five" which honestly works much better when the guy closed out has an ace gap. But here, in these position-types that rule leads to overly safe plays and recubing too early as the leader overestimates his chances.

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