I hate leaving my checkers on the 24pt unsplit after my opponent makes an advanced anchor, but here we are way behind in the race and bar/21 gives us good chances of making an advanced anchor of our own anyway.

              
 
              
 | | White is Player 2
score: 0 pip: 154 | Unlimited Game | pip: 182 score: 0
Blue is Player 1 | |
XGID=-----bE-B--AdD---d-e----BA:0:0:1:64:0:0:0:0:10 |
Blue to play 64 |
1. | Rollout1 | Bar/21 13/7 | eq: -0.538 |
| Player: Opponent: | 38.51% (G:8.25% B:0.31%) 61.49% (G:20.37% B:1.56%) | Conf.: ± 0.016 (-0.554...-0.522) - [99.9%] Duration: 31 minutes 58 seconds |
|
2. | Rollout1 | Bar/15 | eq: -0.574 (-0.036) |
| Player: Opponent: | 38.02% (G:7.27% B:0.33%) 61.98% (G:21.08% B:1.47%) | Conf.: ± 0.016 (-0.591...-0.558) - [0.1%] Duration: 32 minutes 25 seconds |
|
3. | Rollout1 | Bar/21 24/18 | eq: -0.584 (-0.046) |
| Player: Opponent: | 38.04% (G:7.52% B:0.30%) 61.96% (G:22.93% B:1.40%) | Conf.: ± 0.016 (-0.600...-0.569) - [0.0%] Duration: 29 minutes 13 seconds |
|
|
1 1296 Games rolled with Variance Reduction. Dice Seed: 271828 Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.10
The following position looks like a manually created variant of the above position, but in fact these two positions arose naturally in two different games. Since I hadn't gotten around to studying the first position before the second position arose, I made the same play both times. Oh well. Here the extra builder on the 8pt makes 13/7 even more attractive.

              
 
              
 | | White is Player 2
score: 0 pip: 154 | Unlimited Game | pip: 184 score: 0
Blue is Player 1 | |
XGID=-----bD-C--AdD---d-e----BA:0:0:1:64:0:0:0:0:10 |
Blue to play 64 |
1. | Rollout1 | Bar/21 13/7 | eq: -0.473 |
| Player: Opponent: | 40.15% (G:8.47% B:0.32%) 59.85% (G:19.79% B:1.51%) | Conf.: ± 0.017 (-0.491...-0.456) - [100.0%] Duration: 34 minutes 01 second |
|
2. | Rollout1 | Bar/21 24/18 | eq: -0.524 (-0.050) |
| Player: Opponent: | 39.58% (G:7.41% B:0.31%) 60.42% (G:22.06% B:1.34%) | Conf.: ± 0.017 (-0.541...-0.507) - [0.0%] Duration: 31 minutes 41 seconds |
|
3. | Rollout1 | Bar/15 | eq: -0.529 (-0.055) |
| Player: Opponent: | 39.18% (G:7.61% B:0.34%) 60.82% (G:20.51% B:1.30%) | Conf.: ± 0.018 (-0.547...-0.511) - [0.0%] Duration: 34 minutes 01 second |
|
|
1 1296 Games rolled with Variance Reduction. Dice Seed: 271828 Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.10