I was a little surprised at how much of a modification to the position was needed to get the bot to hit. We can jack up the gammons by pulling checkers out of White's home board into the outfield, but if we do that, then we also alter the winning probabilities.
Variant 1:
        
 
        
 | | White is Player 2
score: 0
pip: 93 | Unlimited Game
Jacoby Beaver | pip: 54
score: 0
Blue is Player 1 |
|
| XGID=-DCBCB------a---Acbcbbb---:1:-1:1:54:0:0:3:0:10 |
| Blue to play 54 |
| 1. | Rollout1 | 16/7 | eq: +0.984 |
| Player:
Opponent: | 99.26% (G:0.00% B:0.00%)
0.74% (G:0.00% B:0.00%) | Conf.: ± 0.000 (+0.984...+0.984) - [100.0%]
Duration: 15.3 seconds |
|
| 2. | Rollout1 | 16/11 5/1 | eq: +0.973 (-0.011) |
| Player:
Opponent: | 98.79% (G:0.00% B:0.00%)
1.21% (G:0.00% B:0.00%) | Conf.: ± 0.000 (+0.973...+0.974) - [0.0%]
Duration: 15.4 seconds |
|
| 3. | Rollout1 | 16/12* 12/7 | eq: +0.920 (-0.064) |
| Player:
Opponent: | 92.09% (G:9.66% B:0.02%)
7.91% (G:0.41% B:0.01%) | Conf.: ± 0.001 (+0.919...+0.922) - [0.0%]
Duration: 20.0 seconds |
|
| |
1 1296 Games rolled with Variance Reduction.
Dice Seed: 52672062
Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.19.211.pre-release
Variant 2:
 
| | White is Player 2
score: 0
pip: 94 | Unlimited Game
Jacoby Beaver | pip: 54
score: 0
Blue is Player 1 |
|
| XGID=-DCBCB------a---Adacbbb---:1:-1:1:54:0:0:3:0:10 |
| Blue to play 54 |
| 1. | Rollout1 | 16/7 | eq: +0.986 |
| Player:
Opponent: | 99.36% (G:0.01% B:0.00%)
0.64% (G:0.00% B:0.00%) | Conf.: ± 0.000 (+0.986...+0.986) - [100.0%]
Duration: 15.1 seconds |
|
| 2. | Rollout1 | 16/11 5/1 | eq: +0.977 (-0.009) |
| Player:
Opponent: | 98.95% (G:0.00% B:0.00%)
1.05% (G:0.00% B:0.00%) | Conf.: ± 0.000 (+0.976...+0.977) - [0.0%]
Duration: 15.5 seconds |
|
| 3. | Rollout1 | 16/12* 12/7 | eq: +0.960 (-0.026) |
| Player:
Opponent: | 93.29% (G:12.32% B:0.02%)
6.71% (G:0.22% B:0.00%) | Conf.: ± 0.002 (+0.958...+0.962) - [0.0%]
Duration: 7.5 seconds |
|
| |
1 1296 Games rolled with Variance Reduction.
Dice Seed: 52672062
Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.19.211.pre-release
Variant 3:
| | White is Player 2
score: 0
pip: 95 | Unlimited Game
Jacoby Beaver | pip: 54
score: 0
Blue is Player 1 |
|
| XGID=-DCBCB------a---Ae-cbbb---:1:-1:1:54:0:0:3:0:10 |
| Blue to play 54 |
| 1. | Rollout1 | 16/12* 12/7 | eq: +1.002 |
| Player:
Opponent: | 93.97% (G:15.53% B:0.02%)
6.03% (G:0.19% B:0.01%) | Conf.: ± 0.002 (+1.000...+1.004) - [100.0%]
Duration: 1 minute 53 seconds |
|
| 2. | Rollout1 | 16/7 | eq: +0.989 (-0.014) |
| Player:
Opponent: | 99.47% (G:0.01% B:0.00%)
0.53% (G:0.00% B:0.00%) | Conf.: ± 0.000 (+0.988...+0.989) - [0.0%]
Duration: 4 minutes 10 seconds |
|
| 3. | Rollout1 | 16/11 5/1 | eq: +0.981 (-0.021) |
| Player:
Opponent: | 99.13% (G:0.01% B:0.00%)
0.87% (G:0.00% B:0.00%) | Conf.: ± 0.000 (+0.981...+0.981) - [0.0%]
Duration: 4 minutes 06 seconds |
|
| |
1 1296 Games rolled with Variance Reduction.
Dice Seed: 52672062
Moves: 4-ply, cube decisions: XG Roller+
Search interval: Large
|
eXtreme Gammon Version: 2.19.211.pre-release