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53P-31P-53S-43 plus Nack's Variants – XGR++ Evals

Posted By: Taper_Mike
Date: Sunday, 24 April 2016, at 7:56 p.m.

In Response To: 53P-31P-53S-43 -- Key factor (Nack Ballard)

Comparing H and K

Thanks Nack! This was a great exercise.

In my OP, I mentioned that I recently studied a group of similar positions where the roll was 32. In those, the hit came with a 2, so there was no example of breaking the 8pt to hit. That meant that I never got a feel for how that factors into the decision. These exercises gave me some experience with that. Now I will go back, and try the 43 roll in my other examples.

Here were my guesses before checking XG. I was only interested in gauging the H/K margin. In some positions, it is possible that neither was the top play.

1a. K by a small amount
1b. H is clear
1c. H by small amount

2a. H is clear
2b. H is close
2c. H by small amount

Here are the XGR++ evals (if you zoom back, you should see side-by-side board positions):

Position 1a





White is Player 2

score: 0
pip: 151
Unlimited Game
Jacoby Beaver
pip: 163
score: 0

Blue is Player 1
XGID=-a--aBD-B---dE---c-d--b-B-:0:0:1:43:0:0:3:0:10
Blue to play 43

1.XG Roller++24/21 24/20eq: -0.0743
Player:
Opponent:
48.67% (G:11.30% B:0.45%)
51.33% (G:14.14% B:0.50%)
2.XG Roller++8/5 8/4* eq: -0.0817 (-0.0074)
Player:
Opponent:
48.22% (G:15.08% B:0.52%)
51.78% (G:16.61% B:1.18%)
3.XG Roller++8/4* 4/1* eq: -0.0847 (-0.0104)
Player:
Opponent:
47.72% (G:16.47% B:0.40%)
52.28% (G:17.13% B:1.16%)
4.XG Roller++13/10 8/4* eq: -0.0982 (-0.0239)
Player:
Opponent:
48.81% (G:15.06% B:0.60%)
51.19% (G:18.56% B:1.90%)
5.XG Roller++24/21 8/4* eq: -0.1126 (-0.0383)
Player:
Opponent:
47.84% (G:14.06% B:0.54%)
52.16% (G:17.99% B:1.25%)

eXtreme Gammon Version: 2.10

Position 1b





White is Player 2

score: 0
pip: 151
Unlimited Game
Jacoby Beaver
pip: 163
score: 0

Blue is Player 1
XGID=-a--aBD-B---dE---c-d--b-B-:0:0:1:32:0:0:3:0:10
Blue to play 32

1.XG Roller++13/10 6/4* eq: +0.1060
Player:
Opponent:
53.30% (G:16.54% B:0.71%)
46.70% (G:16.05% B:1.40%)
2.XG Roller++24/21 6/4* eq: +0.0683 (-0.0377)
Player:
Opponent:
52.29% (G:15.01% B:0.58%)
47.71% (G:15.27% B:0.88%)
3.XG Roller++6/4* 4/1* eq: -0.0045 (-0.1105)
Player:
Opponent:
49.78% (G:16.09% B:0.41%)
50.22% (G:15.74% B:0.94%)

eXtreme Gammon Version: 2.10

 

Position 2a





White is Player 2

score: 0
pip: 151
Unlimited Game
Jacoby Beaver
pip: 165
score: 0

Blue is Player 1
XGID=-a--aBC-C---dE---c-d--b-B-:0:0:1:43:0:0:3:0:10
Blue to play 43

1.XG Roller++13/10 8/4* eq: +0.1060
Player:
Opponent:
53.30% (G:16.54% B:0.71%)
46.70% (G:16.05% B:1.40%)
2.XG Roller++24/21 8/4* eq: +0.0683 (-0.0377)
Player:
Opponent:
52.29% (G:15.01% B:0.58%)
47.71% (G:15.27% B:0.88%)
3.XG Roller++8/4* 4/1* eq: -0.0045 (-0.1105)
Player:
Opponent:
49.78% (G:16.09% B:0.41%)
50.22% (G:15.74% B:0.94%)

eXtreme Gammon Version: 2.10

Position 2b





White is Player 2

score: 0
pip: 151
Unlimited Game
Jacoby Beaver
pip: 165
score: 0

Blue is Player 1
XGID=-a--aBC-C---dE---c-d--b-B-:0:0:1:32:0:0:3:0:10
Blue to play 32

1.XG Roller++13/10 6/4* eq: +0.0639
Player:
Opponent:
52.71% (G:14.96% B:0.62%)
47.29% (G:16.74% B:1.47%)
2.XG Roller++24/21 6/4* eq: +0.0260 (-0.0379)
Player:
Opponent:
51.56% (G:13.83% B:0.56%)
48.44% (G:16.16% B:0.91%)
3.XG Roller++8/5 6/4* eq: -0.0184 (-0.0822)
Player:
Opponent:
50.24% (G:14.52% B:0.54%)
49.76% (G:16.40% B:1.20%)
4.XG Roller++6/4* 4/1* eq: -0.0726 (-0.1364)
Player:
Opponent:
48.68% (G:13.99% B:0.42%)
51.32% (G:16.49% B:0.98%)

eXtreme Gammon Version: 2.10

 

Position 3a





White is Player 2

score: 0
pip: 151
Unlimited Game
Jacoby Beaver
pip: 161
score: 0

Blue is Player 1
XGID=-a--aBE-A---dE---c-d--b-B-:0:0:1:43:0:0:3:0:10
Blue to play 43

1.XG Roller++13/10 8/4* eq: -0.0816
Player:
Opponent:
48.25% (G:15.64% B:0.56%)
51.75% (G:17.19% B:1.48%)
2.XG Roller++8/4* 4/1* eq: -0.1063 (-0.0247)
Player:
Opponent:
47.11% (G:15.36% B:0.38%)
52.89% (G:16.30% B:0.98%)
3.XG Roller++24/21 8/4* eq: -0.1136 (-0.0321)
Player:
Opponent:
47.31% (G:14.25% B:0.50%)
52.69% (G:16.55% B:0.97%)

eXtreme Gammon Version: 2.10

Position 3b





White is Player 2

score: 0
pip: 151
Unlimited Game
Jacoby Beaver
pip: 161
score: 0

Blue is Player 1
XGID=-a--aBE-A---dE---c-d--b-B-:0:0:1:32:0:0:3:0:10
Blue to play 32

1.XG Roller++8/5 6/4* eq: -0.0816
Player:
Opponent:
48.13% (G:15.43% B:0.52%)
51.87% (G:16.71% B:1.21%)
2.XG Roller++13/10 6/4* eq: -0.0836 (-0.0020)
Player:
Opponent:
48.95% (G:15.33% B:0.60%)
51.05% (G:18.66% B:1.95%)
3.XG Roller++6/4* 4/1* eq: -0.0880 (-0.0064)
Player:
Opponent:
47.73% (G:16.01% B:0.39%)
52.27% (G:16.88% B:1.16%)
4.XG Roller++24/21 6/4* eq: -0.1069 (-0.0253)
Player:
Opponent:
47.96% (G:13.85% B:0.51%)
52.04% (G:17.83% B:1.24%)

eXtreme Gammon Version: 2.10

 

Mike

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