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MC Semi-Final Key Doubling Decision

Posted By: Carlo Melzi
Date: Thursday, 21 July 2011, at 12:04 p.m.

In Response To: MC Semi-Final Key Doubling Decision (Casper van der Tak)

This actually happened in the next game.

Fabio missed a couple of doubles and then cubed in this position:

is Paul Weaver

score: 21
pip: 108
23 point match
pip: 114
score: 20

is Fabio Gullotta
XGID=-a-CBCB-B-----a-BbcbcbA-a-:0:0:1:00:20:21:0:23:10
on roll, cube action?


Analyzed in Rollout
No Double
Player Winning Chances: 64,55% (G: 17,93% B: 0,85%)
Opponent Winning Chances: 35,45% (G: 9,45% B: 0,87%)
Double/Take
Player Winning Chances: 64,52% (G: 19,73% B: 1,95%)
Opponent Winning Chances: 35,48% (G: 10,13% B: 0,49%)
Cubeless Equities
No Double:+0,378
Double:+1,004
Cubeful Equities
No Double:+0,698 (-0,302)
Double/Take:+1,004 (+0,004)
Double/Drop:+1,000
Best Cube action: Double / Drop
Rollout details
324 Games rolled with Variance Reduction.
Dice Seed: 60593785
Moves and cube decisions: 3 ply
Confidence No Double: ± 0,024 (+0,675...+0,722)
Confidence Double: ± 0,040 (+0,964...+1,044)
Double Decision confidence: 100,0%
Take Decision confidence: 57,5%
Duration: 4 minutes 16 seconds

eXtreme Gammon Version: 1.21, MET: Rockwell-Kazaross

This is a TCTC decision, but at this score facing a weaker player I usually tend to take a little more because:

- he will not win as many gammons as XG in this game - if I lose a single, often we will have to play 2 games instead of 1 - the first game will be GG/GS, where he might make mistakes

Compare this to quasi-DMP, where pretty much everybody doubles in the first rolls and only consideration is to win the game, and you come out with a more aggressive taking IMO.

What do you think?

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