AFAIK, 52S-31P-62 is the first T4 (technical four-score position) to have been discovered as early as the third roll of the game that holds up under the scrutiny of lengthy XG 3-ply rollouts.
Here is a nacbrac summary of the rollout results posted below:
m[R S1 r4 Z10] "<=103*58 15 (and [S R1 r4 Z14] "<20**5)
d[r S3 R9 s27 Z29] "<46*15 5
s[Z C37 R74] "<5
g[S Z11 r14 R26 s28] "<20*12 5
Ken Bame is rolling out 52S-31P-62 for money on XG2 4-ply. I'll post the result when his rollout is completed.
Nack
MONEY

              
 
              
 | | White is Player 2
score: 0 pip: 163 | Unlimited Game Jacoby Beaver | pip: 160 score: 0
Blue is Player 1 | |
| XGID=-b----E-D---eD---b-db-A-A-:0:0:1:62:0:0:3:0:10 |
| Blue to play 62 |
| 1. | Rollout1 | 22/14 | eq: -0.2800 |
| Player: Opponent: | 44.06% (G:10.48% B:0.50%) 55.94% (G:17.74% B:0.64%) | Conf.: ±0.0017 (-0.2817...-0.2783) - [74.2%] Duration: 2 days 15 hours 29 minutes |
|
| 2. | Rollout1 | 22/16 13/11 | eq: -0.2808 (-0.0008) |
| Player: Opponent: | 44.05% (G:11.18% B:0.54%) 55.95% (G:18.28% B:0.83%) | Conf.: ±0.0017 (-0.2825...-0.2791) - [25.4%] Duration: 2 days 14 hours 15 minutes |
|
| 3. | Rollout2 | 24/16 | eq: -0.2836 (-0.0037) |
| Player: Opponent: | 44.36% (G:10.59% B:0.56%) 55.64% (G:19.20% B:0.67%) | Conf.: ±0.0024 (-0.2860...-0.2813) - [0.3%] Duration: 2 days 05 hours 52 minutes |
|
| 4. | Rollout3 | 24/22 13/7 | eq: -0.2898 (-0.0099) |
| Player: Opponent: | 42.51% (G:11.42% B:0.48%) 57.49% (G:14.39% B:0.59%) | Conf.: ±0.0047 (-0.2945...-0.2852) - [0.0%] Duration: 11 hours 58 minutes |
|
| |
1 103680 Games rolled with Variance Reduction. Dice Seed: 41364172 Moves: 3-ply, cube decisions: XG Roller
2 58320 Games rolled with Variance Reduction. Dice Seed: 41364172 Moves: 3-ply, cube decisions: XG Roller
3 15351 Games rolled with Variance Reduction. Dice Seed: 41364172 Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.01
DMP

              
 
              
 | | White is Player 2
score: 0 pip: 163 | | 1 point match | pip: 160 score: 0
Blue is Player 1 | |
| XGID=-b----E-D---eD---b-db-A-A-:0:0:1:62:0:0:0:1:10 |
| Blue to play 62 |
| 1. | Rollout1 | 24/16 | eq: -0.113 |
| Player: Opponent: | 44.35% (G:12.08% B:1.60%) 55.65% (G:20.21% B:2.36%) | Conf.: ± 0.001 (-0.114...-0.112) - [100.0%] Duration: 1 day 07 hours 43 minutes |
|
| 2. | Rollout1 | 22/16 13/11 | eq: -0.116 (-0.003) |
| Player: Opponent: | 44.20% (G:12.60% B:1.50%) 55.80% (G:19.95% B:2.77%) | Conf.: ± 0.001 (-0.117...-0.115) - [0.0%] Duration: 1 day 07 hours 09 minutes |
|
| 3. | Rollout2 | 22/14 | eq: -0.122 (-0.009) |
| Player: Opponent: | 43.92% (G:11.66% B:1.36%) 56.08% (G:18.26% B:2.06%) | Conf.: ± 0.002 (-0.123...-0.120) - [0.0%] Duration: 13 hours 12 minutes |
|
| 4. | Rollout3 | 24/18 13/11 | eq: -0.141 (-0.027) |
| Player: Opponent: | 42.97% (G:12.48% B:1.64%) 57.03% (G:22.49% B:3.05%) | Conf.: ± 0.003 (-0.143...-0.138) - [0.0%] Duration: 3 hours 44 minutes |
|
| 5. | Rollout3 | 24/22 13/7 | eq: -0.142 (-0.029) |
| Player: Opponent: | 42.89% (G:12.69% B:1.58%) 57.11% (G:18.31% B:2.33%) | Conf.: ± 0.003 (-0.145...-0.139) - [0.0%] Duration: 3 hours 48 minutes |
|
| |
1 46656 Games rolled with Variance Reduction. Dice Seed: 47241684 Moves: 3-ply, cube decisions: XG Roller
2 15552 Games rolled with Variance Reduction. Dice Seed: 47241684 Moves: 3-ply, cube decisions: XG Roller
3 5184 Games rolled with Variance Reduction. Dice Seed: 47241684 Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.01, MET: Kazaross XG2
Gammon SAVE

              
 
              
 | | White is Player 2
score: 0 pip: 163 | 2 point match Crawford | pip: 160 score: 1
Blue is Player 1 | |
| XGID=-b----E-D---eD---b-db-A-A-:0:0:1:26:1:0:1:2:10 |
| Blue to play 26 |
| 1. | Rollout1 | 24/22 13/7 | eq: -0.440 |
| Player: Opponent: | 41.72% (G:12.78% B:1.46%) 58.28% (G:13.75% B:1.41%) | Conf.: ± 0.004 (-0.444...-0.437) - [100.0%] Duration: 4 hours 23 minutes |
|
| 2. | Rollout1 | 24/22 8/2 | eq: -0.477 (-0.037) |
| Player: Opponent: | 41.04% (G:13.11% B:1.68%) 58.96% (G:14.91% B:1.68%) | Conf.: ± 0.004 (-0.482...-0.473) - [0.0%] Duration: 4 hours 13 minutes |
|
| 3. | Rollout1 | 22/14 | eq: -0.515 (-0.074) |
| Player: Opponent: | 44.43% (G:13.53% B:1.98%) 55.57% (G:20.17% B:1.55%) | Conf.: ± 0.004 (-0.519...-0.511) - [0.0%] Duration: 4 hours 06 minutes |
|
| |
1 5184 Games rolled with Variance Reduction. Dice Seed: 6344457 Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.01, MET: Kazaross XG2
Gammon GO

              
 
              
 | | White is Player 2
score: 1 pip: 163 | 2 point match Crawford | pip: 160 score: 0
Blue is Player 1 | |
| XGID=-b----E-D---eD---b-db-A-A-:0:0:1:62:0:1:1:2:10 |
| Blue to play 62 |
| 1. | Rollout1 | 22/16 13/11 | eq: +0.106 |
| Player: Opponent: | 44.77% (G:10.53% B:1.00%) 55.23% (G:19.78% B:2.66%) | Conf.: ± 0.002 (+0.104...+0.108) - [100.0%] Duration: 16 hours 43 minutes |
|
| 2. | Rollout1 | 24/22 13/7 | eq: +0.095 (-0.011) |
| Player: Opponent: | 43.26% (G:11.48% B:0.82%) 56.74% (G:18.72% B:2.12%) | Conf.: ± 0.002 (+0.093...+0.097) - [0.0%] Duration: 17 hours 14 minutes |
|
| 3. | Rollout2 | 24/16 | eq: +0.092 (-0.014) |
| Player: Opponent: | 44.96% (G:9.65% B:1.09%) 55.04% (G:19.44% B:2.48%) | Conf.: ± 0.002 (+0.090...+0.094) - [0.0%] Duration: 11 hours 21 minutes |
|
| 4. | Rollout3 | 22/14 | eq: +0.080 (-0.026) |
| Player: Opponent: | 44.36% (G:9.62% B:0.74%) 55.64% (G:17.70% B:2.14%) | Conf.: ± 0.003 (+0.076...+0.083) - [0.0%] Duration: 4 hours 13 minutes |
|
| 5. | Rollout3 | 24/18 13/11 | eq: +0.078 (-0.028) |
| Player: Opponent: | 43.58% (G:10.32% B:1.18%) 56.42% (G:22.32% B:3.05%) | Conf.: ± 0.004 (+0.074...+0.082) - [0.0%] Duration: 4 hours 07 minutes |
|
| |
1 20736 Games rolled with Variance Reduction. Dice Seed: 59918362 Moves: 3-ply, cube decisions: XG Roller
2 12960 Games rolled with Variance Reduction. Dice Seed: 59918362 Moves: 3-ply, cube decisions: XG Roller
3 5184 Games rolled with Variance Reduction. Dice Seed: 59918362 Moves: 3-ply, cube decisions: XG Roller
|
eXtreme Gammon Version: 2.01, MET: Kazaross XG2