stockfish-nnue-2020-08-11

Changes:

• Merged the official Stockfish master branch. (27b593a)
• convert_bin Clamped score between -32,000 to 32,000. Thank you, tttak!
• convert_bin Excluded invalid fens. Thank you, tttak!
• convert_bin Excluded invlaid moves. Thank you, tttak!
• gensfen Fixed a bug that the random seed is always constant. (#68)
• gensfen Fixed a bug that the training data generator does not use EGTB. Thank you, linox! (#67)
• gensfen Fixed a bug that the training data generator crashes when eval_limit is high. (#77)
• gensfen detect_draw_by_consecutive_low_score option is added. If detect_draw_by_consecutive_low_score is set to 1, the training data generator adjudicates game to a draw if the last 4 moves of each engine has a score of zero starting at ply 80. The default value is 0. Thank you, linox.
• gensfen detect_draw_by_insufficient_mating_material option is added. If detect_draw_by_insufficient_mating_material is set to 1, the training data generator terminates the game early and not wait for 2-fold repetition in KvK, KBvK/KvKB or KNvK/KvKN and KBvKB (same bishop color). The default value is 0. Thank you, linox.
• gensfen Renamed use_draw_in_training_data_generation option to write_out_draw_game_in_training_data_generation. The old option name is still available.
• learn Renamed use_draw_in_training to use_draw_games_in_training. The old option name is still available.
• learn Renamed use_draw_in_validation to use_draw_games_in_validation. The old option name is still available.
• learn Renamed use_hash_in_training to skip_duplicated_positions_in_training. The old option name is still available.

The network parameter file is not included in this release. Please download the strongest network parameter file on fishtest (https://tests.stockfishchess.org/nns). If there are questions, ask in the Stockfish unofficial Discord server (https://discord.gg/ZzJwPv3) at first.

filename	CPU instructions	Supported CPUs
sse2	Intel Streaming SIMD Extensions 2	>= AMD Athlon 64
sse3	Intel Streaming SIMD Extensions 3	>= Intel Pentium 4 (Prescott model F)
sse3-popcnt	Intel Streaming SIMD Extensions 3 + POPCNT	>= AMD Phenom
ssse3	Intel Supplemental Streaming SIMD Extensions 3	>= Intel Core 2 Duo (Merom)
sse41	Intel Streaming SIMD Extensions 4.1	>= Intel Core 2 Duo (Penryn)
sse42	Intel Streaming SIMD Extensions 4.2	>= Intel Core i7 (Bloomfield), AMD FX (Bulldozer)
avx2	Intel Advanced Vector Extensions 2	>= AMD APU (Carrizo)
bmi2	Intel Advanced Vector Extensions 2 + BMI2	>= Intel Core i7 (Haswell)
avx512	Intel Advanced Vector Extensions 512	>= Intel Core i9/i7 (Skylake-X)

filename	network
halfkp_256x2-32-32	halfkp_256x2-32-32

filename	usage
learn	training data generator + trainer with blas (training is fast)