Response vs. Opening   at 3-away, 3-away

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+
|2O ' ' '2X4X '2X ' ' '5O|
|   |
|      |  22  |
|2X ' ' ' '5O|   | '3O ' ' '5X|
+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

Pip counts: White: 163, Red: 167


• Red to play  

            • Equities at 3-away: White, 3-away: Red

13/11(2) 6/4(2) +0.025
    50.1%   15.9%  1.8%    49.9%   15.5%   1.4%   CL: +0.007    CF: +0.025
24/22(2) 6/4(2) +0.016 ( -0.009)
    49.7%   13.2%  1.2%    50.3%   11.3%   1.0%   CL: +0.025    CF: +0.016
24/22 13/11 6/4(2)        (936 games) - 0.098 ( -0.123)
    48.9%   14.0%  1.5%    51.1%   14.8%   1.6%   CL: - 0.040    CF: - 0.066


            Full cubeful rollout, 1296 games, Play: 0-ply/expert, Cube: 2-ply/33%, using Jacob/Trice Met


            • Equities at 3-away: White, 3-away: Red

24/22(2) 6/4(2) +0.018
    49.5%   13.5%  1.2%    50.5%   11.5%   0.9%   CL: +0.023    CF: +0.018
13/11(2) 6/4(2) - 0.019 ( -0.037)
    49.8%   16.0%  2.1%    50.2%   15.7%   1.9%   CL: - 0.006    CF: - 0.019
24/22 13/11 6/4(2)        (936 games) - 0.083 ( -0.101)
    48.7%   14.7%  0.9%    51.3%   14.7%   1.5%   CL: - 0.036    CF: - 0.083


            Full cubeful rollout, 1296 games, Play: 0-ply/expert, Cube: 2-ply/33%, using Kazaross/Shaw Met (Ver.121503)


            • Equities at 3-away: White, 3-away: Red

24/22(2) 6/4(2) +0.017
    49.5%   13.6%  1.3%    50.5%   11.6%   0.9%   CL: +0.025    CF: +0.017
13/11(2) 6/4(2) - 0.014 ( -0.031)
    49.9%   16.0%  2.1%    50.1%   15.9%   1.9%   CL: - 0.004    CF: - 0.014
24/22 13/11 6/4(2)        (936 games) - 0.090 ( -0.107)
    48.6%   14.4%  1.2%    51.4%   14.8%   1.6%   CL: - 0.039    CF: - 0.090


            Full cubeful rollout, 1296 games, Play: 0-ply/expert, Cube: 2-ply/33%, using Mec26 Met



Usually when a rollout has a reversal of plays between cubeless and cubeful results (as showed on Trice Met here), it's from one of two reasons:
1) The position is a cash or a near cash.
2) The cubeful choice wins more games than the cubeless choice.

1) doesn't apply here, of course. As for 2), 13/11(2) 6/4(2) wins 0.4% more games than 24/22(2) 6/4(2), cubeful.

My rule of thumb is:
If the reversed play wins more than 0.020 (cubeless equities) than the cubeful play, I consider that it is mostly due to a rollout fluke of cube handlings which have happened during the rollout process.

Standard deviation of the Trice Met rollout here is less than 0.020 (cubeful), 0.010 (cubeless) for both plays and the single-win difference is 0.018, so a longer-trial rollout (something like 5184 games) might make them reversed.

In any case, I believe 24/22(2) 6/4(2) is the best play on this match score as Kazaross and mec26 Mets rollouts confirm.




















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