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Chess engine: Stockfish 20092822 and NNUE

on

Stockfish - UCI chess engine, compiled by Stéphane Nicolet
Rating JCER=3294

Timestamp: 1601325746
Include pawns in NNUE scaling

We now include the total pawn count in the scaling factor for the output of the NNUE evaluation network. This should have the effect of trying to keep more pawns when SF has the advantage, but exchange them when she is defending.

Thanks to Alexander Pagel (Lolligerhans) for the idea of using the value of pawns to ease the comparison with the rest of the material estimation.

Passed STC:
LLR: 2.93 (-2.94,2.94) {-0.25,1.25}
Total: 15072 W: 1700 L: 1539 D: 11833 Elo +3.71
Ptnml(0-2): 65, 1202, 4845, 1355, 69
https://tests.stockfishchess.org/tests/view/5f7235a63b22d6afa50699b3

Passed LTC:
LLR: 2.93 (-2.94,2.94) {0.25,1.25}
Total: 25880 W: 1270 L: 1124 D: 23486 Elo +1.96
Ptnml(0-2): 23, 980, 10788, 1126, 23
https://tests.stockfishchess.org/tests/view/5f723b483b22d6afa5069a99
Bench: 3776081

Stockfish 20092822 and NNUE download

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