Mixing it up instead of running is the right idea here, although running to the midpoint is only a minor error. The top three "mix it up" plays are close enough that any could come out on top in a longer rollout. Knowing that they are close is good enough for me, so I didn't bother to extend the rollout.
Nobody went for the pure play, and the bot doesn't like it much either.

              
 
              
 | | White is Player 1
score: 0 pip: 144 | Unlimited Game Jacoby Beaver | pip: 153 score: 0
Blue is Player 2 | |
| XGID=---b--E-E---bCa--bcc-bB---:0:0:1:63:0:0:3:0:10 |
| Blue to play 63 |
| 1. | Rollout1 | 8/5 8/2 | eq: -0.610 |
| Player: Opponent: | 33.83% (G:7.39% B:0.22%) 66.17% (G:13.37% B:0.59%) | Conf.: ± 0.013 (-0.623...-0.597) - [91.4%] Duration: 7 minutes 18 seconds |
|
| 2. | Rollout1 | 13/4 | eq: -0.625 (-0.015) |
| Player: Opponent: | 33.36% (G:7.49% B:0.26%) 66.64% (G:13.62% B:0.60%) | Conf.: ± 0.013 (-0.638...-0.613) - [4.5%] Duration: 7 minutes 19 seconds |
|
| 3. | Rollout1 | 13/10 8/2 | eq: -0.626 (-0.016) |
| Player: Opponent: | 32.98% (G:7.27% B:0.20%) 67.02% (G:12.62% B:0.52%) | Conf.: ± 0.012 (-0.638...-0.613) - [4.1%] Duration: 6 minutes 34 seconds |
|
| 4. | Rollout1 | 22/13 | eq: -0.641 (-0.031) |
| Player: Opponent: | 35.76% (G:6.23% B:0.29%) 64.24% (G:22.95% B:0.47%) | Conf.: ± 0.012 (-0.653...-0.629) - [0.0%] Duration: 6 minutes 31 seconds |
|
| 5. | Rollout1 | 13/7 8/5 | eq: -0.686 (-0.076) |
| Player: Opponent: | 32.39% (G:6.75% B:0.28%) 67.61% (G:16.16% B:0.78%) | Conf.: ± 0.013 (-0.699...-0.673) - [0.0%] Duration: 5 minutes 54 seconds |
|
| |
1 1296 Games rolled with Variance Reduction. Moves: 3-ply, cube decisions: XG Roller
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eXtreme Gammon Version: 2.10