Chess Engines Diary

  Dear sponsors and friends. This is the first Mega Drive upgrade in April. We hope your download will be quick. Thank you for supporting our work. MEGA Dysk - update  14.04.2024 (90 chess engines) Windows: (79 files): Akimbo 1.0.0.7z Alexander 1.1.7z Alexandria 6.1.0.7z Arasan 24.2.7z Aurora 1.11.4.7z Belette 3.0.0.7z Berserk 13.7z Berserk 20240318.7z Big-SF 140324.7z Big-SF 200324.7z Big-SF 210324.7z BrainLearn 28.7z Cadabra 2.0.1.7z Cadie 1.7.7z Caissa 1.18.7z Camel 1.4.0.7z Cheng 4.47.7z Clarity 6.0.0.7z Clover 6.1.1.9.7z Corchess 20240323.7z Corchess 20240331.7z Crystal 8.7z Delocto 0.7.7z Eubos 3.4.7z Fatalii 0.6.1.7z Hazard JigSaw 5.00.7z HypnoS 030424.7z HypnoS 190324.7z HypnoS 240324.7z INCOGNITO 8.zip INCOGNITO 8.1.7z INCOGNITO 8.2.7z Ippolit 032324.7z Jet 1.2.7z Lambergar 0.5.1.7z lc0-v0.31.0-rc1-windows-gpu-nvidia-cuda.7z lc0-v0.31.0-rc1-windows-gpu-nvidia-cudnn.7z Lux 4.2.7z Lynx 1.4.0.7z Marauders 3.0.7z Mida 2.3.1.7z Monty 0.1.0.7z Motor 0.3.0.7z MrBob 1.3.0 NNUE.7z Obsi

Stockfish 2024041120  - UCI chess engine, compiled by  Muzhen Gaming Rating CEDR=3760 Timestamp: 1712867032 VVLTC search tune Parameters were tuned in 3 stages: * Using an earlier L1-3072 net, and with triple extension margin manually set to 0: https://tests.stockfishchess.org/tests/view/65ffdf5d0ec64f0526c544f2 (~30k games) * Continue tuning, but with the previous master net (L1-2560). https://tests.stockfishchess.org/tests/view/660663f00ec64f0526c59c41 (~27k games) * Starting with the parameters from step 2, use the current L1-3072 net, and allow the triple extension margin to be tuned starting from 0: https://tests.stockfishchess.org/tests/view/660c16b8216a13d9498e7536 (40k games) Passed VVLTC 1st sprt: https://tests.stockfishchess.org/tests/view/66115eacbfeb43334bf7eddd LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 27138 W: 7045 L: 6789 D: 13304 Elo +3.28 Ptnml(0-2): 1, 2421, 8471, 2673, 3 Passed VVLTC 2nd sprt: https://tests.stockfishchess.org/tests/view/661483623eb00c8ccc0049c

  💾  552 (!) games from the tournament download   👍 @chessenginesdiary  Country - Poland, City -  Malbork 🕓 Time 3'+3" 💻HP Pavilion i5-1035G1 8GB RAM 🖬 GUI-Banksia All  CEDR  317.321 games download  (01.04.2024 - 3'+3")  HypnoS 030424, Yuli GM Pro 16, Stockfish 16.1 and ShashChess 35 . These four engines scored the same number of points and placed at the top of the table in this strong tournament. Tech table: Engine KN/move NPS dep/mov time/mov mov/game time/game fails Alexandria 6.1.0 3218 576429 30.2 5.6 56.7 316.2 Berserk 13 4779 841025 36.7 5.7 56.0 318.1 Brainlearn 28 2275 366977 31.4 6.2 43.5 269.4 Caissa 1.18 5492 923486 30.2 5.9 50.4 299.7 Clover 6.1.19 4803 854377 31.4 5.6 62.2 349.4 Cool Iris 12.10 2201 356730 27.6 6.2 51.2 315.5 CorChess 20240331 2253 372774 27.4 6.0 52.2 315.8 Crystal 8 3582 571994 20.3 6.3 47.7 298.8 Fire 9.3 5225 876565 22.0 6.0 55.5 331.1 Fisherov chess monk 1.2 3487 619728 36.0 5.6 60.4 340.0 Hyp

ShashChess - UCI chess engine. Rating CEDR=3747 (01.04.2024) ShashChess is a free UCI chess engine derived from Stockfish family chess engines.  v.35.1: ShashChess 35.1 Nodestime option corrected futility pruning: parent node ShashChess 34.5 - results: Corchess 20231123 50.5/100 +1 100 Games Eman 9.80 19.5/38 +1 38 Games Patzer AI X-256 18.5/38 -1 38 Games Brainlearn 26.4 18/38 -2 38 Games Hazard 4.1 17.5/36 -1 36 Games Raid 3.1 16/32 +0 32 Games Crystal 7 CMB 16/32 +0 32 Games Dragon 3.3 16.5/30 +3 30 Games Polyfish 231120 15.5/30 +1 30 Games Stockfish 16 15/30 +0 30 Games Sawfish 2TC 14/28 +0 28 Games Deep Blue 20230628 14/28 +0 28 Games Incognito 4 12.5/26 -1 26 Games YuliGM PrO 15 12.5/24 +1 24 Games Vanilla 14c 12/24 +0 24 Games Fisherov chess monk 1.2 13/22 +4 22 Games Cool Iris 11.50 11/22 +0 22 Games SF-PRO 19.11.23 8.5/16 +1 16 Games YuliGM Pro 14 6/12 +0 12 Games Killfish 231123 6/12 +0 12 Games Killfish 071223 5.5/12 -1 12 Games ShashChess 35.1 - download

Fatalii - UCI  chess engine Author: Patrick Heck,  Rating CEDR=2386 v.0.6.1: @FitzOReilly FitzOReilly released this last week · 7 commits to main since this release  v0.6.1  6cbb144 Fixes an issue that prevented the engine from searching if one of the UCI go options was set to a negative value (e.g. go wtime 109264 btime -76 winc 8000 binc 8000). It now prints a warning, replaces the negative value with 0 and starts searching. (Previously, it printed an error message without starting the search.) Rating CEDR progres -  Fatalii Pawn 3.0 0/14 -14 14 Games Caissa 1.16 1/12 -10 12 Games Minic 3.41 0/12 -12 12 Games Shuffle 5.0.0 3.5/8 -1 8 Games Lynx 1.2.0 1.5/8 -5 8 Games Counter 5.5 0.5/8 -7 8 Games Texel 1.11 0/8 -8 8 Games Pedantic 0.6.2 0/8 -8 8 Games Uralochka 3.41 dev1 0/8 -8 8 Games Arasan 24.1 0/8 -8 8 Games Midnight 9 0/8 -8 8 Games Sheep 1.0 6/7 +5 7 Games Cheng 4.43 2/6 -2 6 Games Lizard 10.1 0/6 -6 6 Games Akimbo 0.8.0 0/6 -6 6 Games Avalanche 2.1.0 0/6 -6 6 Games Catto 0.1.0

  Saturn - UCI chess enegine v.1.3: STC tests suggest the expected CCRL 40/15 elo of about 3360 Much smaller net for sick nps gains: (4x768->512)x2 -> 1 Search tweaks and parameter tuning Compressed net weights embedded in the exe A bit of refactoring and bug fixing (self play is still bugged though) Score of saturn1.3-AVX2 vs saturn1.2-AVX2: 150 - 16 - 65  [0.790] 231 ...      saturn1.3-AVX2 playing White: 98 - 3 - 15  [0.909] 116 ...      saturn1.3-AVX2 playing Black: 52 - 13 - 50  [0.670] 115 ...      White vs Black: 111 - 55 - 65  [0.621] 231 Elo difference: 230.2 +/- 42.1, LOS: 100.0 %, DrawRatio: 28.1 % Saturn 1.3 download

  PurplePanda   Have fun exploring the code or playing the engine (UCI). Author - Jakob256 Version 16:   Score vs V15 56% (Elo +42) tempo bonus PurplePanda 16 download