I'm not totally sure why there is such a big swing between the original position and the variant below. I suppose one possibility is that in the original position, after the forced bar/23, the back checkers are not split and hence Blue would like to increase flexibility.
          
 
        
 | | White is Player 2
score: 0
pip: 166 | | Unlimited Game | pip: 157
score: 0
Blue is Player 1 |
|
| XGID=-a--b-E-E---cCa--b-db--A-A:0:0:1:52:0:0:0:0:10 |
| Blue to play 52 |
| 1. | Rollout1 | Bar/18 | eq: -0.472 |
| Player:
Opponent: | 40.20% (G:9.66% B:0.41%)
59.80% (G:21.95% B:0.78%) | Conf.: ± 0.016 (-0.488...-0.456) - [100.0%]
Duration: 7 minutes 52 seconds |
|
| 2. | Rollout1 | Bar/23 6/1* | eq: -0.545 (-0.073) |
| Player:
Opponent: | 37.54% (G:8.86% B:0.28%)
62.46% (G:20.02% B:0.85%) | Conf.: ± 0.015 (-0.560...-0.530) - [0.0%]
Duration: 8 minutes 50 seconds |
|
| 3. | Rollout1 | Bar/23 8/3 | eq: -0.592 (-0.120) |
| Player:
Opponent: | 36.43% (G:8.93% B:0.35%)
63.57% (G:20.02% B:0.90%) | Conf.: ± 0.016 (-0.608...-0.576) - [0.0%]
Duration: 8 minutes 23 seconds |
|
| 4. | Rollout1 | Bar/23 13/8 | eq: -0.611 (-0.138) |
| Player:
Opponent: | 36.17% (G:8.35% B:0.30%)
63.83% (G:19.74% B:0.83%) | Conf.: ± 0.015 (-0.625...-0.596) - [0.0%]
Duration: 8 minutes 08 seconds |
|
| |
1 1296 Games rolled with Variance Reduction.
Dice Seed: 62908879
Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.19.211.pre-release
Variant:
| | White is Player 2
score: 0
pip: 166 | | Unlimited Game | pip: 158
score: 0
Blue is Player 1 |
|
| XGID=-a--b-E-E---cCa--b-db---AA:0:0:1:52:0:0:0:0:10 |
| Blue to play 52 |
| 1. | Rollout1 | Bar/23 6/1* | eq: -0.485 |
| Player:
Opponent: | 39.36% (G:9.13% B:0.30%)
60.64% (G:19.87% B:0.90%) | Conf.: ± 0.007 (-0.492...-0.478) - [100.0%]
Duration: 32 minutes 49 seconds |
|
| 2. | Rollout1 | Bar/18 | eq: -0.509 (-0.024) |
| Player:
Opponent: | 39.44% (G:9.30% B:0.37%)
60.56% (G:22.68% B:0.79%) | Conf.: ± 0.008 (-0.517...-0.501) - [0.0%]
Duration: 30 minutes 14 seconds |
|
| 3. | Rollout1 | Bar/23 13/8 | eq: -0.521 (-0.036) |
| Player:
Opponent: | 38.44% (G:8.83% B:0.30%)
61.56% (G:20.23% B:0.80%) | Conf.: ± 0.008 (-0.529...-0.514) - [0.0%]
Duration: 29 minutes 51 seconds |
|
| 4. | Rollout1 | Bar/23 8/3 | eq: -0.554 (-0.069) |
| Player:
Opponent: | 38.10% (G:8.92% B:0.34%)
61.90% (G:21.42% B:1.00%) | Conf.: ± 0.008 (-0.562...-0.546) - [0.0%]
Duration: 31 minutes 01 second |
|
| |
1 5184 Games rolled with Variance Reduction.
Dice Seed: 62908879
Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.19.211.pre-release