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Solutions to

30 Oct 2017
(Answers next month)

Break Down the Wall
Solutions

Position 1


Move number 3: Black to play 64

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+
|2O ' ' '1X2X|   |4X ' '2X '2O|
|                   |   |                   |
|                 | 1 |       6 4       |
|4X2O ' '3O '|   |4O '2O ' '2X|
+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

Pip counts: Red 152, Black 152
Position ID: jLfgATCY55gBMA Match ID: cAkzATAACAAA


Annotation

With the race equal and little difference in board coverage where should Black focus his attention?

# Ply Move Equity
  1 R 24/14 +0.235
 
0.5460.1610.010-0.4540.1560.007 +0.117 +0.235
0.0010.0010.000-0.0010.0010.000 0.002 0.006
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  2 R 13/7 11/7 +0.188 ( -0.047)
 
0.5260.1820.012-0.4740.1580.014 +0.094 +0.188
0.0010.0010.000-0.0010.0010.001 0.003 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  3 R 8/2 6/2 +0.121 ( -0.113)
 
0.5060.1750.013-0.4940.1660.010 +0.044 +0.121
0.0010.0010.000-0.0010.0010.000 0.003 0.006
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  4 R 11/5 8/4 -0.071 ( -0.306)
 
0.4670.1620.012-0.5330.1900.018 -0.084 -0.071
0.0010.0010.000-0.0010.0010.001 0.003 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  5 2 24/20 8/2 -0.045 ( -0.280)
  0.479 0.153 0.010 - 0.521 0.200 0.011  

 

Position 2


Move number 3: Black to play 62

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+
|4O ' ' '2X1O|   |3X ' ' '2X1O|
|                   |   |                   |
|                 | 1 |       6 2       |
|4X ' '1O3O '|   |2O3O2X '1X1X|
+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

Pip counts: Red 179, Black 154
Position ID: hjN4gClwc+FBIA Match ID: cAlrARAAAAAA


Annotation

Black has several attractive options available to him.

# Ply Move Equity
  1 R 13/7 9/7 +0.823
 
0.6710.2320.013-0.3290.0760.003 +0.523 +0.823
0.0010.0010.000-0.0010.0010.000 0.003 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  2 R 9/3 5/3 +0.637 ( -0.186)
 
0.6400.2160.011-0.3600.0890.004 +0.428 +0.637
0.0010.0010.000-0.0010.0010.000 0.003 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  3 R 24/18 8/6 +0.589 ( -0.235)
 
0.6320.1920.010-0.3680.0850.004 +0.389 +0.589
0.0010.0010.000-0.0010.0010.000 0.003 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  4 R 24/18 13/11 +0.584 ( -0.239)
 
0.6320.1920.009-0.3680.0880.004 +0.384 +0.584
0.0010.0010.000-0.0010.0010.000 0.003 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 550662650 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  5 2 24/18 9/7 +0.459 ( -0.364)
  0.616 0.163 0.007 - 0.384 0.083 0.002  

 



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