To my mind it should be very simple for a bot to come up with the right figures
here and in similar positions. There is another bot out there that does not
have these difficulties and gets exactly the same figures as the GNU rollout on
its equivalent of GNU 2-ply and all higher plys.
Using the new MET I get.
GNU Backgammon Position ID: IQAA0AAAAAAAAA
Match ID : UYnyAEAAAAAA
+13-14-15-16-17-18------19-20-21-22-23-24-+ O: B
| | | O O | OOO 4 points
| | | | OOO
| | | | OOO
| | | | OO
| | | | OO
v| |BAR| | 7 point match
| | | | XX
| | | | XX
| | | | XX
| | | X | XXX Rolled 54
| | | X X | XXX 0 points
+12-11-10--9--8--7-------6--5--4--3--2--1-+ X: A (Cube: 2)
Cube analysis
0-ply cubeless equity -0.158 (Money: -0.158)
0.421 0.000 0.000 - 0.579 0.000 0.000
Cubeful equities:
1. Double, take -0.093
2. Double, pass +1.000 ( +1.093)
3. No double -0.128 ( -0.035)
Proper cube action: Redouble, take
Cube analysis
1-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.118
2. Double, pass +1.000 ( +1.118)
3. Double, take -0.170 ( -0.053)
Proper cube action: No redouble, take (4.5%)
Cube analysis
2-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.137
2. Double, pass +1.000 ( +1.137)
3. Double, take -0.170 ( -0.034)
Proper cube action: No redouble, take (2.9%)
Cube analysis
3-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.137
2. Double, pass +1.000 ( +1.137)
3. Double, take -0.170 ( -0.034)
Proper cube action: No redouble, take (2.9%)
Cube analysis
4-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.137
2. Double, pass +1.000 ( +1.137)
3. Double, take -0.170 ( -0.034)
Proper cube action: No redouble, take (2.9%)
Cube analysis
5-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.137
2. Double, pass +1.000 ( +1.137)
3. Double, take -0.170 ( -0.034)
Proper cube action: No redouble, take (2.9%)
Cube analysis
6-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.137
2. Double, pass +1.000 ( +1.137)
3. Double, take -0.170 ( -0.034)
Proper cube action: No redouble, take (2.9%)
Cube analysis
7-ply cubeless equity -0.198 (Money: -0.198)
0.401 0.000 0.000 - 0.599 0.000 0.000
Cubeful equities:
1. No double -0.137
2. Double, pass +1.000 ( +1.137)
3. Double, take -0.170 ( -0.034)
Proper cube action: No redouble, take (2.9%)
Rollout details:
Player A owns 2-cube:
0.421 0.000 0.000 - 0.579 0.000 0.000 CL -0.158 CF -0.137
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Player B owns 4-cube:
0.421 0.000 0.000 - 0.579 0.000 0.000 CL -0.093 CF -0.093
[0.000 0.000 0.000 - 0.000 0.000 0.000 CL 0.000 CF 0.000]
Full cubeful rollout with var.redn.
129599 games, Mersenne Twister dice gen. with seed 849748376 and quasi-random
dice
Play: world class 2-ply cubeful prune [world class]
keep the first 0 0-ply moves and up to 8 more moves within equity 0.16
Skip pruning for 1-ply moves.
Cube: 2-ply cubeful prune [world class]
BTW the rollout has stopped short of the set 129600 trials.
XGID=-A---A----------------ba--:1:-1:-1:00:4:0:0:7:10
Score is X:4 O:0 7 pt(s) match.
+12-11-10--9--8--7-------6--5--4--3--2--1-+
| | | O O | +---+
| | | O | | 2 |
| | | | +---+
| | | |
| | | |
| |BAR| |
| | | |
| | | |
| | | |
| | | |
| | | X X |
+13-14-15-16-17-18------19-20-21-22-23-24-+
Pipcount X: 6 O: 8 X-O: 4-0/7
Cube : 2, O own cube
O on roll, cube action
Analyzed in 3 ply
Player Winning Chances: 42.10% (G: 0.00% B: 0.00%)
Opponent Winning Chances: 57.90% (G: 0.00% B: 0.00%)
Cubeless Equities: No Redouble=-0.158, Redouble=-0.093
Cubeful Equities:
No Redouble: -0.137 (-0.044)
Redouble/Take: -0.093
Redouble/Drop: +1.000 (+1.093)
Best Cube action: Redouble / Take
eXtreme Gammon Version: 1.12, MET: Rockwell-Kazaross
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