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5a-3a - Cat on a hot tin roof - Rollout

Posted By: sebalotek
Date: Sunday, 16 April 2017, at 7:55 p.m.

In Response To: 5a-3a - Cat on a hot tin roof (Stick)

SG >> The double looks easy

SR >> Seems like a clear cube to me

You guys are much better players than me. Seems I am missing my big brass OTB bawls of steel ;)

I looked at the position again:

  • I am already on the roof
  • He has a 4 point board (albeit with gaps)
  • Behind in the race (by 21 pips!)
  • I am only about 58% favourite
  • If I dance on this fairly strong board, a tonne of shots (6-5, 6-3, 5-1, 5-3, 4-3, 3-1, 4-1 plus 55, 44, 33, 11 plus any I missed) all make a sucky 5th point.
  • If I dance I leave that blot on my 14 which is threatened by all direct 2's

Also the rollout confusingly says I have more winning chances if I don't double? No double 57.39% > Double/Take 56.99%

Before your advice I would never have had the insight to double this position and even after, looking at it 20-20, the thought of shipping the cube here still gives me the willies :)





White is Player 2

score: 4
pip: 102
7 point match
pip: 123
score: 2

Blue is Player 1
XGID=-a-BBBC-B---aBA-ac-c-b-bbA:0:0:1:00:2:4:0:7:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 57.39% (G:17.77% B:1.05%) 56.99% (G:19.36% B:1.14%)
Opponent Winning Chances: 42.61% (G:19.87% B:0.31%) 43.01% (G:20.15% B:0.62%)
Cubeless Equities +0.075 +0.349
Cubeful Equities
No double:+0.217 (-0.073)±0.013 (+0.204..+0.229)
Double/Take:+0.290±0.018 (+0.272..+0.308)
Double/Pass:+1.000 (+0.710)
Best Cube action: Double / Take
Rollout details
1296 Games rolled with Variance Reduction.
Dice Seed: 26955205
Moves: 2-ply, cube decisions: 3-ply Red
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 31.6 seconds

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

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