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Spoiler: What if opp. owns cube?

Posted By: Taper_Mike
Date: Thursday, 4 December 2014, at 5:25 a.m.

In Response To: Spoiler: What if opp. owns cube? (Timothy Chow)

Isn't this mostly just because the definition of EMG causes equities to be divided by 2 when the cube is on 2?

My bad. The evals below indicate you are right!

If you multiply the equity of the top play of the second rollout times 2, you get 1.0856. Comparing this with the equity of 0.9337 for the same play in the first diagram suggests that much of the equity in the first diagram comes when the cube is turned later. The fact that the pseudo-cubeless win percentages for the two evals are about the same confirms this.

Mike

Centered Cube at 1





White is Player 2

score: 1
pip: 86
5 point match
pip: 119
score: 0

Blue is Player 1
XGID=----a-EBCC-A-A---bacbabab-:0:0:1:22:0:1:0:5:10
Blue to play 22

1.XG Roller++13/11 9/7 6/4*(2) eq: +0.9337
Player:
Opponent:		78.25% (G:4.69% B:0.09%)
21.75% (G:3.71% B:0.02%)
2.XG Roller++7/5(2) 6/4*(2) eq: +0.8425 (-0.0912)
Player:
Opponent:		77.28% (G:4.02% B:0.08%)
22.72% (G:3.13% B:0.03%)

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

Opponent Owns 2-cube





White is Player 2

score: 1
pip: 86
5 point match
pip: 119
score: 0

Blue is Player 1
XGID=----a-EBCC-A-A---bacbabab-:1:-1:1:22:0:1:0:5:10
Blue to play 22

1.XG Roller++13/11 9/7 6/4*(2) eq: +0.5428
Player:
Opponent:		78.92% (G:4.69% B:0.11%)
21.08% (G:3.69% B:0.03%)
2.XG Roller++7/5(2) 6/4*(2) eq: +0.5072 (-0.0355)
Player:
Opponent:		77.82% (G:4.30% B:0.10%)
22.18% (G:3.22% B:0.04%)

eXtreme Gammon Version: 2.10, MET: Kazaross XG2

 

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