Chess engine: Stockfish 20101413 and NNUE

Stockfish - UCI chess engine, compiled by Joost VandeVondele
Rating JCER=3294

Timestamp: 1602674901

Update default net to nn-04cf2b4ed1da.nnue

Further tune the net parameters, now the last but one layer (32x32). To limit the number of parameters optimized, the network layer was decomposed using SVD, and the singular values were treated as parameters and tuned.

Tuning branch: https://github.com/vondele/Stockfish/tree/svdTune

Tuner: https://github.com/vondele/nevergrad4sf

passed STC:

https://tests.stockfishchess.org/tests/view/5f83e82f8ea73fb8ddf83e4e

LLR: 2.94 (-2.94,2.94) {-0.25,1.25}

Total: 8488 W: 944 L: 795 D: 6749 Elo +6.10

Ptnml(0-2): 39, 609, 2811, 734, 51

passed LTC:

https://tests.stockfishchess.org/tests/view/5f83f4118ea73fb8ddf83e66

LLR: 2.94 (-2.94,2.94) {0.25,1.25}

Total: 169016 W: 8043 L: 7589 D: 153384 Elo +0.93

Ptnml(0-2): 133, 6623, 70538, 7085, 129

Bench: 3945198

Stockfish 20101413 and NNUE download