I think this is a difficult decision. OTB I broke anchor. The computer says this is a mistake. Had I been "lucky" enough to roll 51, breaking anchor would have been O.K., and perhaps best. 18/13 7/6 in the variant position also leaves 8 shots, and the alternative of 8/3 7/6 produces exactly the same position as the play 8/6 7/3 in the original position. Of course 18/13 7/6 includes the valuable crossover 7/6. Still, the tradeoffs here seem pretty subtle.
        
 
         
 | | White is Player 2
score: 0
pip: 113 | Money session
Jacoby | pip: 102
score: 0
Blue is Player 1 |
|
| XGID=a-BB-CBCA---c-----Bcbcc---:1:-1:1:42:0:0:1:0:10 |
| Blue to play 42 |
| 1. | Rollout1 | 8/6 7/3 | eq: +0.425 |
| Player:
Opponent: | 70.32% (G:16.92% B:0.18%)
29.68% (G:5.17% B:0.22%) | Conf: ± 0.010 (+0.415...+0.435)
Duration: 29 minutes 38 seconds |
|
| 2. | Rollout1 | 18/16 18/14 | eq: +0.363 (-0.062) |
| Player:
Opponent: | 70.45% (G:15.02% B:0.21%)
29.55% (G:10.14% B:0.49%) | Conf: ± 0.010 (+0.353...+0.373)
Duration: 32 minutes 46 seconds |
|
| 3. | Rollout1 | 18/14 8/6 | eq: +0.344 (-0.081) |
| Player:
Opponent: | 68.32% (G:16.45% B:0.27%)
31.68% (G:8.31% B:0.31%) | Conf: ± 0.010 (+0.334...+0.354)
Duration: 22 minutes 23 seconds |
|
| |
1 1046 Games rolled with Variance Reduction.
Dice Seed: 2
Moves and cube decisions: 3 ply
|
eXtreme Gammon Version: 1.21
Variant:
| | White is Player 2
score: 0
pip: 113 | Money session
Jacoby | pip: 102
score: 0
Blue is Player 1 |
|
| XGID=a-BB-CBCA---c-----Bcbcc---:1:-1:1:15:0:0:1:0:10 |
| Blue to play 15 |
| 1. | Rollout1 | 18/13 7/6 | eq: +0.438 |
| Player:
Opponent: | 71.59% (G:18.95% B:0.23%)
28.41% (G:9.70% B:0.68%) | Conf: ± 0.010 (+0.428...+0.448)
Duration: 1 hour 31 minutes |
|
| 2. | Rollout1 | 8/3 7/6 | eq: +0.424 (-0.014) |
| Player:
Opponent: | 70.33% (G:16.93% B:0.16%)
29.67% (G:5.21% B:0.22%) | Conf: ± 0.009 (+0.415...+0.433)
Duration: 1 hour 27 minutes |
|
| |
1 1296 Games rolled with Variance Reduction.
Dice Seed: 2
Moves and cube decisions: 3 ply
|
eXtreme Gammon Version: 1.21