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Analysis

Posted By: Stick
Date: Thursday, 21 March 2013, at 7:37 p.m.

In Response To: 5 Positions from Superbackgame (Stick)

Number 1

I was playing against XGR+ while playing this out and it played 10, 5 which made my eyes wake up and pay attention. It's true you can play basically anything here that helps your overall distribution and bear in the best since the opponent should not be hitting on the upcoming sequences.





White is Player 2

score: 0
pip: 220
Unlimited Game
Jacoby Beaver
pip: 132
score: 0

Blue is Player 1
XGID=--bbb-EBCA--dC--Ac-b------:0:0:1:62:0:0:3:0:10
Blue to play 62

1.XG Roller++13/5eq: -0.036
Player:
Opponent:
44.40% (G:22.83% B:1.43%)
55.60% (G:11.48% B:0.54%)
2.XG Roller++16/10 13/11eq: -0.037 (-0.001)
Player:
Opponent:
44.45% (G:22.76% B:1.38%)
55.55% (G:11.55% B:0.53%)
3.XG Roller++16/10 7/5eq: -0.051 (-0.015)
Player:
Opponent:
44.83% (G:20.71% B:1.23%)
55.17% (G:11.58% B:0.53%)
4.XG Roller++13/11 13/7eq: -0.053 (-0.017)
Player:
Opponent:
44.16% (G:22.60% B:1.35%)
55.84% (G:11.99% B:0.54%)


Number 2

I have seen a lot of people unable to stop themselves from double hitting in similar situations OtB in live play. When you have such a powerhouse of a backgame set up and absolutely no offense in place like we do here, patience is a must. Our timing as is is pretty solid.





White is Player 2

score: 0
pip: 126
Unlimited Game
Jacoby Beaver
pip: 220
score: 0

Blue is Player 1
XGID=------B-C---cDa-acbdaBBB--:0:0:1:51:0:0:3:0:10
Blue to play 51

1.XG Roller++13/7eq: +0.011
Player:
Opponent:
55.22% (G:11.34% B:0.47%)
44.78% (G:23.64% B:1.49%)
2.XG Roller++13/8 6/5eq: -0.003 (-0.015)
Player:
Opponent:
55.02% (G:11.06% B:0.44%)
44.98% (G:24.11% B:1.54%)
3.XG Roller++21/20* 21/16* eq: -0.324 (-0.336)
Player:
Opponent:
44.42% (G:9.27% B:0.37%)
55.58% (G:22.10% B:1.13%)


Number 3

The last 3 positions are not as complex and I feel a regular settings rollout is good enough. For this first one if you look at how many horror story rolls your opponent has immediately you'll see why it's a must cube before the shot even comes. Catching something like this OtB means really being awake.





White is Player 2

score: 0
pip: 60
Unlimited Game
Jacoby Beaver
pip: 152
score: 0

Blue is Player 1
XGID=--BBABB--A-------Abeb-BBf-:0:0:1:00:0:0:3:0:10
Blue on roll, cube action?
Analyzed in Rollout No double Double/Take
Player Winning Chances: 70.72% (G:16.23% B:0.62%) 71.78% (G:18.11% B:0.96%)
Opponent Winning Chances: 29.28% (G:14.10% B:0.19%) 28.22% (G:13.79% B:0.20%)
Cubeless Equities +0.440 +0.973
Cubeful Equities
No double:+0.584 (-0.194)±0.015 (+0.569..+0.598)
Double/Take:+0.777±0.020 (+0.757..+0.797)
Double/Pass:+1.000 (+0.223)
Best Cube action: Double / Take
Rollout details
1296 Games rolled with Variance Reduction.
Dice Seed: 57970008
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 9 minutes 33 seconds


Number 4

The math on this one breaks down to making it a simple take.





White is Player 2

score: 0
pip: 15
Unlimited Game
Jacoby Beaver
pip: 130
score: 0

Blue is Player 1
XGID=--BBBBC---------A--a-aABe-:1:1:1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No redouble Redouble/Take
Player Winning Chances: 73.62% (G:0.00% B:0.00%) 74.16% (G:0.00% B:0.00%)
Opponent Winning Chances: 26.38% (G:10.30% B:0.98%) 25.84% (G:10.35% B:0.96%)
Cubeless Equities +0.360 +0.740
Cubeful Equities
No redouble:+0.654±0.005 (+0.649..+0.659)
Redouble/Take:+0.644 (-0.010)±0.010 (+0.633..+0.654)
Redouble/Pass:+1.000 (+0.346)
Best Cube action: No redouble / Take
Percentage of wrong pass needed to make the double decision right: 2.8%
Rollout details
1296 Games rolled with Variance Reduction.
Dice Seed: 57970008
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:95.6%
Take Decision confidence:100.0%
Duration: 2 minutes 04 seconds


Number 5

An excellent example of why one shouldn't misapply maxims like 'double a backgame with 3 points left to clear'.





White is Player 1

score: 0
pip: 161
Unlimited Game
Jacoby Beaver
pip: 82
score: 0

Blue is Player 2
XGID=--BBABB-------A---cefABBa-:0:0:-1:00:0:0:3:0:10
Blue on roll, cube action?

Analyzed in Rollout No double Double/Take
Player Winning Chances: 46.70% (G:26.34% B:1.57%) 46.82% (G:26.39% B:1.57%)
Opponent Winning Chances: 53.30% (G:7.40% B:0.30%) 53.18% (G:7.45% B:0.33%)
Cubeless Equities +0.136 +0.276
Cubeful Equities
No double:+0.120±0.018 (+0.103..+0.138)
Double/Beaver:-0.361 (-0.481)±0.051 (-0.412..-0.310)
Double/Pass:+1.000 (+0.880)
Best Cube action: No double / Beaver
Percentage of wrong pass needed to make the double decision right: 26.1%
Rollout details
1296 Games rolled with Variance Reduction.
Dice Seed: 57970008
Moves: 3-ply, cube decisions: XG Roller
Double Decision confidence:100.0%
Take Decision confidence:100.0%
Duration: 15 minutes 45 seconds

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