Chess engine: Stockfish 23022312 NNUE for Windows and Linux (+1.81)

Stockfish 23022312 - UCI chess engine, compiled by Linmiao Xu
Rating CEDR=3708

Timestamp: 1677155277

Reintroduce nnue pawn scaling with lower lazy thresholds

Params found with the nevergrad TBPSA optimizer via nevergrad4sf modified to:

* use SPRT LLR with fishtest STC elo gainer bounds [0, 2] as the objective function

* increase the game batch size after each new optimal point is found

The params were the optimal point after TBPSA iteration 7 and 160 nevergrad evaluations with:

* initial batch size of 96 games per evaluation

* batch size increase of 64 games after each iteration

* a budget of 512 evaluations

* TC: fixed 1.5 million nodes per move, no time limit

nevergrad4sf enables optimizing stockfish params with TBPSA:

https://github.com/vondele/nevergrad4sf

Using pentanomial game results with smaller game batch sizes was inspired by:

Use of SPRT LLR calculated from pentanomial game results as the objective function was an experiment at maximizing the information from game batches to reduce the computational cost for TBPSA to converge on good parameters.

For the exact code used to find the params:

https://github.com/linrock/tuning-fork

Passed STC:

https://tests.stockfishchess.org/tests/view/63f4ef5ee74a12625bcd114a

LLR: 2.94 (-2.94,2.94) <0.00,2.00>

Total: 66552 W: 17736 L: 17390 D: 31426 Elo +1.81

Ptnml(0-2): 164, 7229, 18166, 7531, 186

Passed LTC:

https://tests.stockfishchess.org/tests/view/63f56028e74a12625bcd2550

LLR: 2.94 (-2.94,2.94) <0.50,2.50>

Total: 71264 W: 19150 L: 18787 D: 33327 Elo +1.77

Ptnml(0-2): 23, 6728, 21771, 7083, 27

closes https://github.com/official-stockfish/Stockfish/pull/4401

bench 3687580

Download:

Windows x64 for Haswell CPUs
Windows x64 for modern computers + AVX2
Windows x64 for modern computers
Windows x64 + SSSE3
Windows x64
Linux x64 for Haswell CPUs
Linux x64 for modern computers + AVX2
Linux x64 for modern computers
Linux x64 + SSSE3
Linux x64

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