Warp Gammon Stumpers

Solutions to

27 Feb 2017
(Answers next month)

Laying the Foundations

Solutions

Position 1

Move number 3: Black to play 11

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+

+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

Pip counts: Red 153, Black 150
Position ID: 4NvBASSYT+QBBQ Match ID: cIlkATAAAAAA

Annotation

Black would like 2 of these to do all the work he'd safely like to do.

Ply

Move

Equity

6/5(2) 4/3*(2)

+0.550

0.610	0.203	0.008	-	0.390	0.098	0.007	+0.355	+0.550
0.001	0.001	0.000	-	0.001	0.001	0.000	0.002	0.006

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

21/20 6/5(3)

+0.389 ( -0.161)

0.579	0.157	0.005	-	0.421	0.081	0.005	+0.256	+0.389
0.001	0.001	0.000	-	0.001	0.001	0.000	0.002	0.006

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

21/20 11/10 6/5(2)

+0.375 ( -0.175)

0.578	0.150	0.005	-	0.422	0.077	0.003	+0.247	+0.375
0.001	0.001	0.000	-	0.001	0.001	0.000	0.002	0.006

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

21/20 8/7 6/5(2)

+0.355 ( -0.195)

0.570	0.159	0.005	-	0.430	0.085	0.004	+0.235	+0.355
0.001	0.001	0.000	-	0.001	0.001	0.000	0.002	0.006

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

21/20 11/8

+0.289 ( -0.262)

0.560 0.133 0.003 - 0.440 0.066 0.001

Position 2

Move number 4: Black to play 44

Pip counts: Red 151, Black 161
Position ID: 4PPgBRCYZ/ABMA Match ID: cAlyATAAAAAA

Annotation

Black has a similar problem in this position. He'd like to do several things with his double.

Ply

Move

Equity

13/5(2)

+0.628

0.598	0.273	0.007	-	0.402	0.088	0.008	+0.419	+0.628
0.001	0.001	0.000	-	0.001	0.001	0.001	0.002	0.007

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

24/20(2) 6/2*(2)

+0.595 ( -0.033)

0.612	0.216	0.005	-	0.388	0.057	0.002	+0.402	+0.595
0.001	0.001	0.000	-	0.001	0.001	0.000	0.002	0.005

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

13/9(2) 6/2*(2)

+0.576 ( -0.052)

0.600	0.267	0.008	-	0.400	0.091	0.007	+0.404	+0.576
0.001	0.001	0.000	-	0.001	0.001	0.001	0.002	0.006

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

24/20 13/9 6/2*(2)

+0.547 ( -0.081)

0.596	0.247	0.007	-	0.404	0.085	0.006	+0.380	+0.547
0.001	0.001	0.000	-	0.001	0.001	0.001	0.002	0.006

Full cubeful rollout with var.redn.

5040 games, Mersenne Twister dice gen. with seed 564131469 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

24/20(2) 13/9(2)

+0.485 ( -0.144)

0.592 0.177 0.004 - 0.408 0.054 0.001

Players Comments

leibo52

24-20 with 2 pieces & 13-9 with 2 pieces