Stockfish 2024062309 NNUE for Windows and Linux, interesting compilation by Shawn Xu (progress +2,68)

Stockfish 2024052319 - UCI chess engine, compiled by Shawn Xu

Rating Chess Engines Diary CEDR=3766

Stockfish 2024062309 Shawn Xu (all versions) download

Timestamp: 1719135708

Simplify Bonus Formula In History Adjustment

Inspired by a discord message [1] from Vizvezdenec, this patch simplifies the bonus adjustment bonus = bonus > 0 ? 2 * bonus : bonus / 2 to a constant addition, maintaining bonus average at around 0 in regular bench. As cj5716 pointed in discord, the constant bonus can also be considered as factoring tempo when calculating bonus, yielding a better value of the move.

Passed Non-regression STC:

LLR: 2.94 (-2.94,2.94) <-1.75,0.25>

Total: 29984 W: 7908 L: 7677 D: 14399 Elo +2.68

Ptnml(0-2): 95, 3502, 7594, 3679, 122

https://tests.stockfishchess.org/tests/view/666f7210602682471b064fa2

Passed Non-regression LTC:

LLR: 2.94 (-2.94,2.94) <-1.75,0.25>

Total: 170136 W: 43214 L: 43145 D: 83777 Elo +0.14

Ptnml(0-2): 158, 19185, 46311, 19258, 156

https://tests.stockfishchess.org/tests/view/666fb32e602682471b064fb5

closes https://github.com/official-stockfish/Stockfish/pull/5401

bench 1438375

Stockfish 20240521 - results:

Sun 14	3.5/6	+1	6 Games
Raid 3.6 TR	3/6	+0	6 Games
Stockfish 16.1	3/6	+0	6 Games
Yuli GM Pro 16	3/6	+0	6 Games
Deep Blue 20240518-assassin	3/6	+0	6 Games
HypnoS 160524	3/6	+0	6 Games
Yuliirma 4.0	3/6	+0	6 Games
AbbyStein 2.8	3/6	+0	6 Games
JigSaw 5.5i	3/6	+0	6 Games
SF PB 190524	2.5/6	-1	6 Games
SF-PRO 05.05.2024	2/4	+0	4 Games
CorChess 20240509	2/4	+0	4 Games
ShashChess 35.3	2/4	+0	4 Games
Dragon 3.3	2/4	+0	4 Games
Marauders 3.4	2/4	+0	4 Games
Kookaburra 2.00	2/4	+0	4 Games
Tactical Titan	2/4	+0	4 Games
Crystal 8	2/4	+0	4 Games
Cool Iris 12.20 D-3072	2/4	+0	4 Games
Brainlearn 28.1	2/4	+0	4 Games
Critter 1.6a	2/2	+2	2 Games