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21 May 2017
Tragic loss for the Doubs
by BRA__Valderi

29 Apr 2017 problems
17 Feb 2017 solutions
? Trivia Corner ?
What gas is used in making creamy beers such as draught Guinness: Nitrogen; Oxygen; Helium; or Radon?
Time Waster
Which operators +, -, /, x, (, ) can you place between the numbers on the left to make the equation true?
4  4   4   4   4  4 = 4
Solutions to Laying the Foundations 17 Feb 2017

27 Jan 2017
(Answers next month)

Escape hatch
Solutions

Position 1


Move number 3: Black to play 33

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+
|3O ' ' '4X '|   |5X ' ' ' '2O|
|                   |   |                   |
|                 | 1 |       3 3       |
|4X1X ' '3O2O|   |5O ' ' ' '1X|
+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

Pip counts: Red 152, Black 155
Position ID: 4PPgBSDg28EBMA Match ID: cIltAQAAAAAA


Annotation

The match has barely started and the race is even. Black has to balance his slightly favourable blocking position with Red having succeeded with escaping one of his back men.

# Ply Move Equity
  1 R 8/5(2) 6/3(2) +0.547
 
0.6080.2560.009-0.3920.0950.006 +0.389 +0.547
0.0010.0010.000-0.0010.0010.000 0.002 0.007
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 564859394 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  2 R 24/21(2) 6/3(2) +0.450 ( -0.097)
 
0.6040.1740.005-0.3960.0650.002 +0.324 +0.450
0.0010.0010.000-0.0010.0000.000 0.002 0.005
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 564859394 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  3 R 24/21(2) 8/5(2) +0.449 ( -0.098)
 
0.5950.1980.005-0.4050.0660.003 +0.328 +0.449
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 564859394 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  4 R 24/18(2) +0.370 ( -0.177)
 
0.5870.1290.003-0.4130.0600.002 +0.246 +0.370
0.0010.0010.000-0.0010.0010.000 0.002 0.005
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 564859394 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  5 2 24/21 8/5(3) +0.324 ( -0.224)
  0.565 0.205 0.007 - 0.435 0.096 0.003  

 

Position 2


Move number 3: Black to play 22

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+
|4O ' ' '2X2X|   |5X '1O '2X1O|
|                   |   |                   |
|                 | 1 |       2 2       |
|3X ' '1O3O '|   |3O2O ' ' '1X|
+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

Pip counts: Red 127, Black 158
Position ID: hm+DAyCwc+EBIg Match ID: cAlpAUAAGAAA


Annotation

Black is further behind in this position and can't escape his back men so is looking to contain the remaining Red blot in his home board.

# Ply Move Equity
  1 R 13/11 8/4 6/4 +0.062
 
0.5270.1330.007-0.4730.1940.013 -0.002 +0.062
0.0010.0010.000-0.0010.0010.001 0.002 0.006
 
  Full cubeful rollout with var.redn.  
  5040 games, Mersenne Twister dice gen. with seed 565140566 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  2 R 13/7 9/7 +0.026 ( -0.036)
 
0.5150.1210.005-0.4850.1830.007 -0.024 +0.026
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 565140566 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  3 R 24/22 8/4 6/4 -0.100 ( -0.162)
 
0.4890.1160.006-0.5110.2130.009 -0.114 -0.100
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 565140566 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  4 R 9/7 8/4 6/4 -0.110 ( -0.172)
 
0.4880.1240.007-0.5120.2200.012 -0.118 -0.110
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 565140566 and quasi-random dice  
  Play: 0-ply cubeful [expert]  
  Cube: 0-ply cubeful [expert]  
  5 2 13/9(2) -0.110 ( -0.172)
  0.479 0.119 0.005 - 0.521 0.192 0.007  

 



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