http://www.talkchess.com/forum3/viewtop ... =2&t=61858
I built, based on large databases of human games a positional test-suite for middlegame phase of the game, roughly moves 15-22. The statistics of human games on each position is weaker than in openings, so it was harder to have some confidence in chosen unique solutions. I used engines mostly for checking to not have tactical complications in positions.
I have 250 middlegame positions in this positional test-suite. I also combined 4 of them in a suite of 1000 positions, for the statistical significance of the result. Results can vary quite a bit on just one run of the test-suite (especially on many cores), so 4 runs are better to have a more precise result. I uploaded here the positional Middlegames250 test-suite, combined 4 Middlegames1000 test-suite, the old Openings200 test-suite and combined 5 Openings1000 test-suite. They are the most faithfully positional test suites I am aware of, and are my creation .
The results using positional Middlegames1000 suite:
AB engines on 4 strong i7 cores.
Lc0 on RTX 2070 GPU
Positions found in time interval from 1 to 2 seconds per position using Polyglot EPD testing features.
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Midgames1000: Lc0 v21.1 ID41844 737/1000 Lc0 v21.1 ID32930 730/1000 Houdini 6.03 655/1000 Houdini 6.03Tactic 635/1000 Komodo 12.3 609/1000 Stockfish_dev 584/1000 Booot 6.3.1 584/1000 Texel 1.07 561/1000 Andscacs 0.95 555/1000 Ethereal 11.25 548/1000 Fire 7.1 545/1000 Fruit 2.1 398/1000
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Openings1000: Lc0 v21.1 ID41844 762/1000 Lc0 v21.1 ID32930 727/1000 Stockfish_dev 574/1000 Houdini 6.03 558/1000 Komodo 12.3 556/1000 Booot 6.3.1 494/1000 Andscacs 0.95 484/1000 Ethereal 11.00 457/1000 Fire 7.1 431/1000 Texel 1.07 419/1000
My verrry good positional test suites are attached.