Robertie explains why 8/2 6/2 is a wrong idea  blue needs his 5 point, not the 2 point. His suggested move is 13/9 13/7, but blue does not have enough timing to squat on the ace point in this priming battle.
  White is Player 2
score: 0 pip: 138  Unlimited Game Jacoby  pip: 136 score: 0
Blue is Player 1  
XGID=bBBCBBBbbbebB:0:0:1:64:0:0:1:0:10 
Blue to play 64 
1.  Rollout^{1}  24/20 13/7  eq: +0.169 
 Player: Opponent:  55.33% (G:20.35% B:2.01%) 44.67% (G:17.14% B:0.80%)  Conf.: ± 0.006 (+0.163...+0.176)  [100.0%] Duration: 19 minutes 58 seconds 

2.  Rollout^{1}  13/9 13/7  eq: +0.148 (0.022) 
 Player: Opponent:  53.37% (G:18.80% B:1.65%) 46.63% (G:13.25% B:0.77%)  Conf.: ± 0.006 (+0.142...+0.154)  [0.0%] Duration: 17 minutes 20 seconds 

3.  Rollout^{2}  8/2 6/2  eq: +0.060 (0.109) 
 Player: Opponent:  51.18% (G:18.56% B:1.49%) 48.82% (G:15.28% B:0.96%)  Conf.: ± 0.014 (+0.046...+0.074)  [0.0%] Duration: 2 minutes 19 seconds 


^{1} 10368 Games rolled with Variance Reduction. Dice Seed: 13140766 Moves: 3ply, cube decisions: XG Roller
^{2} 1296 Games rolled with Variance Reduction. Dice Seed: 13140766 Moves: 3ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10
Give blue just a tad more timing and 13/9 13/7 is the right move.
  White is Player 2
score: 0 pip: 132  Unlimited Game Jacoby  pip: 136 score: 0
Blue is Player 1  
XGID=bBBCBBBbbbcbbB:0:0:1:64:0:0:1:0:10 
Blue to play 64 
1.  Rollout^{1}  13/9 13/7  eq: 0.142 
 Player: Opponent:  46.10% (G:16.03% B:1.45%) 53.90% (G:16.56% B:1.08%)  Conf.: ± 0.015 (0.156...0.127)  [100.0%] Duration: 1 minute 48 seconds 

2.  Rollout^{1}  8/2 6/2  eq: 0.255 (0.113) 
 Player: Opponent:  43.54% (G:14.41% B:1.01%) 56.46% (G:18.45% B:1.36%)  Conf.: ± 0.014 (0.269...0.241)  [0.0%] Duration: 1 minute 57 seconds 

3.  Rollout^{1}  24/20 13/7  eq: 0.347 (0.205) 
 Player: Opponent:  44.36% (G:14.53% B:1.33%) 55.64% (G:25.15% B:1.29%)  Conf.: ± 0.014 (0.361...0.333)  [0.0%] Duration: 1 minute 49 seconds 


^{1} 1296 Games rolled with Variance Reduction. Dice Seed: 32599260 Moves: 3ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10
More variants:
  White is Player 2
score: 0 pip: 136  Unlimited Game Jacoby  pip: 136 score: 0
Blue is Player 1  
XGID=bBBCBBBbbbdcB:0:0:1:64:0:0:1:0:10 
Blue to play 64 
1.  Rollout^{1}  13/9 13/7  eq: +0.156 
 Player: Opponent:  53.71% (G:18.73% B:1.73%) 46.29% (G:13.49% B:0.80%)  Conf.: ± 0.011 (+0.145...+0.167)  [100.0%] Duration: 4 minutes 25 seconds 

2.  Rollout^{1}  24/20 13/7  eq: +0.122 (0.034) 
 Player: Opponent:  54.91% (G:19.23% B:1.68%) 45.09% (G:17.98% B:0.81%)  Conf.: ± 0.012 (+0.110...+0.134)  [0.0%] Duration: 4 minutes 55 seconds 

3.  Rollout^{2}  8/2 6/2  eq: +0.012 (0.144) 
 Player: Opponent:  50.50% (G:17.96% B:1.46%) 49.50% (G:15.96% B:1.04%)  Conf.: ± 0.016 (0.004...+0.027)  [0.0%] Duration: 2 minutes 19 seconds 


^{1} 2592 Games rolled with Variance Reduction. Dice Seed: 32599260 Moves: 3ply, cube decisions: XG Roller
^{2} 1296 Games rolled with Variance Reduction. Dice Seed: 32599260 Moves: 3ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10
  White is Player 2
score: 0 pip: 139  Unlimited Game Jacoby  pip: 136 score: 0
Blue is Player 1  
XGID=bBBCBBBbbcdbB:0:0:1:64:0:0:1:0:10 
Blue to play 64 
1.  Rollout^{1}  24/20 13/7  eq: 0.041 
 Player: Opponent:  50.22% (G:18.50% B:1.65%) 49.78% (G:17.82% B:0.86%)  Conf.: ± 0.017 (0.058...0.024)  [100.0%] Duration: 2 minutes 49 seconds 

2.  Rollout^{1}  13/9 13/7  eq: 0.100 (0.058) 
 Player: Opponent:  47.32% (G:16.44% B:1.29%) 52.68% (G:15.12% B:0.88%)  Conf.: ± 0.015 (0.114...0.085)  [0.0%] Duration: 2 minutes 20 seconds 

3.  Rollout^{1}  8/2 6/2  eq: 0.174 (0.132) 
 Player: Opponent:  45.46% (G:16.12% B:1.28%) 54.54% (G:17.56% B:1.23%)  Conf.: ± 0.015 (0.188...0.159)  [0.0%] Duration: 2 minutes 29 seconds 


^{1} 1296 Games rolled with Variance Reduction. Dice Seed: 32599260 Moves: 3ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10
  White is Player 2
score: 0 pip: 141  Unlimited Game Jacoby  pip: 136 score: 0
Blue is Player 1  
XGID=bBBCBBBbcccbB:0:0:1:64:0:0:1:0:10 
Blue to play 64 
1.  Rollout^{1}  24/20 13/7  eq: 0.089 
 Player: Opponent:  48.08% (G:17.98% B:1.41%) 51.92% (G:16.71% B:0.89%)  Conf.: ± 0.015 (0.104...0.074)  [100.0%] Duration: 2 minutes 44 seconds 

2.  Rollout^{1}  13/9 13/7  eq: 0.234 (0.146) 
 Player: Opponent:  43.80% (G:15.56% B:1.26%) 56.20% (G:15.94% B:0.94%)  Conf.: ± 0.015 (0.250...0.219)  [0.0%] Duration: 2 minutes 22 seconds 

3.  Rollout^{1}  8/2 6/2  eq: 0.284 (0.195) 
 Player: Opponent:  42.45% (G:14.85% B:1.17%) 57.55% (G:18.20% B:1.18%)  Conf.: ± 0.018 (0.302...0.266)  [0.0%] Duration: 2 minutes 31 seconds 


^{1} 1296 Games rolled with Variance Reduction. Dice Seed: 32599260 Moves: 3ply, cube decisions: XG Roller

eXtreme Gammon Version: 2.10