Chess Engines Diary

The two engines Stockfish 15.1 and Stockfish 16.1 scored the same number of points. Among the new engines, Velvet 7.3.0 performed well and took fourth place. Time: 3'+3", GUI-Banksia,  Intel Core i5, 8 GB Memory , macOS 240 Tournament games , Table created: Banksia All  2.771 games download Tech Table: Engine KN/move NPS depths/move time/move moves/game time/game fails Arche 0.3.5 2060 340291 6.8 6.1 32.3 195.4 Asymptote 0.6 3130 655820 20.3 4.8 58.8 280.5 Avalanche 2.1.0 2466 470542 23.7 5.2 62.0 325.1 Carp 3.0.1 1278 288061 26.4 4.4 75.5 334.7 Cheng 4.43 2772 524853 23.8 5.3 63.1 333.1 Critter 1.6a 5900 1138935 19.7 5.2 64.3 332.8 Dragon 3.1 1937 396853 27.6 4.9 68.1 332.2 Fornax 4.0 2750 480420 13.7 5.7 55.5 317.7 Igel 2.6.0 64 2749 536387 24.1 5.1 65.3 334.5 Leorik 2.5 5608 1016979 19.1 5.5 58.8 324.4 McBrain 9 4383 829515 27.4 5.3 57.1 301.9 Simbelmyne 1.5.1 0 0 0.0 0.0 0.0 0.0 30 Stockfish 15.1 1448 264076 37.3 5.5 60.0 329.1

OpenTal - UCI chess engine Rating Chess Engines Diary CEDR=2913 Author - Paweł Kozioł OpenTal is an open source UCI chess engine that emulates weird and wonderful chess of "the wizard of Riga" - Mikhail Tal. It is based on Rodent, and probably plays at 2500-2600 Elo level. The exquisite tuner of chess engines, Brendan J. Norman, transformed all the missing rating points into pure style. OpenTal will sacrifice material, turning the chess board into a world of chaos, and will mount a reletless pressure on its opponent's position. Against decent engines, OpenTal will overpress and lose. However, it is not meant to play against engines. It is meant to play against you. Install it under Winboard or Arena, and go against one of the greatest attackers of all time. No tweaks, no options, only Tal inside! OpenTal has a couple of quirks. You can supply it with a modern opening book, but it will consult internal book made out of Tal's games first. Its evaluations are notorio

  The tournament is won by the Arasan 24.2.2 engine without losing. Alexander 1.3 has the same number of points and Igel 3.55 in third place. All CEDR  333.448 games download  (01.05.2024 - 3'+3")  💾  272 games from the tournament download  👍 @chessenginesdiary  Country - Poland, City -  Malbork 🕓 Time 3'+3" 💻 Lenovo Z710 i7-4710MG 8GB RAM  🖬 GUI-Arena P Engine CEDR Score Chg +/-/= 1: Arasan 24.2.2 3580 28.0 / 32 +3 (+24 -0 =8) 2: Alexander 1.3 2980 28.0 / 32 +61 (+25 -1 =6) 3: Igel 3.55 3601 27.5 / 32 -3 (+24 -1 =7) 4: Midnight 9 3450 26.0 / 32  -13 (+24 -4 =4) 5: Saturn 1.3 2400 25.5 / 32 +157 (+23 -4 =5) 6: Cheng 4.48 3168 23.5 / 32 -13 (+20 -5 =7) 7: Ice4 v4 2915 19.5 / 32 -16 (+19 -12 =1)

  Tcheran - UCI chess engine Rating CEDR=2248 v.2.3: Implement lazy (staged) move generation (~25 Elo) Index the history heuristic array by player (~9 Elo) Fix a bug which overwrote killer moves with moves from another ply (~7 Elo) Tcheran 2.2 - results: Obsidian 12.0 0/12 -12 12 Games Victoire 1.3.0 10/10 +10 10 Games Zagreus 5.0 7/10 +4 10 Games Yakka 1.0 1.5/10 -7 10 Games Peacekeeper 2.40 0/10 -10 10 Games Cadabra 2.0.1 6.5/8 +5 8 Games Velvet 7.3.0 0/8 -8 8 Games Akimbo 1.0.0 0/8 -8 8 Games Alexander 1.1 0/8 -8 8 Games Arasan 24.2 0/8 -8 8 Games Clarity 6.0.0 0/8 -8 8 Games Rebel 16.3 0/8 -8 8 Games Delocto 0.7 1/7 -5 7 Games Sloth 1.7 3.5/6 +1 6 Games Fatalii 0.6.1 3/6 +0 6 Games Critter 1.6a 0/6 -6 6 Games Saturn 1.3 0/6 -6 6 Games Clover 6.1.19 0/6 -6 6 Games Rice 8.0.0 0/6 -6 6 Games Alexandria 6.1.0 0/6 -6 6 Games Ciorap-Bot 0.3 2.5/4 +1 4 Games   Tcheran 2.3 download

  Marauders  - UCI chess engine (Stockfish clone) Chess Engines Diary Rating CEDR=3744 Includes a code that adjusts the evaluation of the chess position based on a rating advantage. It uses a scaling factor based on the rating advantage to modify the evaluation of positions, potentially giving more weight to guaranteed draws in the engine's evaluation function when a rating advantage is present. Marauders 3.3i  results: Cool Iris 12.20 D-3072 13/24 +2 24 Games JigSaw 5.5i 13/24 +2 24 Games HypnoS 220424 12.5/24 +1 24 Games Deep Blue 20240315-killer 12/24 +0 24 Games Crystal 8 12/24 +0 24 Games Yuli GM Pro 16 12/24 +0 24 Games Stockfish 16.1 12/24 +0 24 Games Brainlearn 28 12/24 +0 24 Games Yuliirma 4.0 11.5/24 -1 24 Games Raid 3.6 TR 11/24 -2 24 Games Stockfish 20240421 11/24 -2 24 Games ShashChess 35.2 11/23 -1 23 Games SF-PRO 13.04.2024 10/20 +0 20 Games CorChess 20240422 9/20 -2 20 Games PlentyChess 1.0.0 3/4 +2 4 Games Ethereal 14.25 3/4 +2 4 Games Kookaburra 2.00 2.5/4 +1 4 G

Berserk 13 won another big Middle Class Chess Engines tournament. We also have the first reliable test of the Titan 1.0.0 engine - it promises to be very good. GPU NVIDIA  RTX 3060 ti. GUI-Banksia, For Every Engine only 1 CPU and 512 Hashtables, Book - short ICCF book,  6TBs. 🕒🕒Time 3'+3"   1100 (!!!) tournaments games download   💾 All games CEDR  333.448 games download  01.05.2024  (3'+3")    @chessenginesdiary P Engine Score +/-/= 1: Berserk 13 115.5 / 200 (+32 -1 =167) 2: Obsidian 12.0 111.0 / 200 (+25 -3 =172) 3: Caissa 1.18 110.0 / 200 (+30 -10 =160) 4: RubiChess 20240112 106.5 / 200 (+23 -10 =167) 5: Alexandria-6.1.0 103.0 / 200 (+19 -13 =168) 6: Ethereal 14.25 102.0 / 200 (+20 -16 =164) 7: PlentyChess 1.0.0 100.0 / 200 (+13 -13 =174) 8: Titan 1.0.0

The new Titan 1.0.0 and Yakka 1.0 engines were promoted to a higher group. The game of the Titan engine looks particularly good, who knows, maybe this chess engine will enter the TOP-64?  The Floyd 0.9 and Aurora 1.11.4 engines were also promoted to the A7 group. Promotion to the Amateur group A7:  Titan 1.0.0, Yakka 1.0, Floyd 0.9, Aurora 1.11.4 .  All CEDR  333.448 games download  (01.05.2024 - 3'+3")  💾  110 games from the tournament download  👍 @chessenginesdiary  Country - Poland, City -  Malbork 🕓 Time 3'+3" 💻Dell G15 SE, i7-11800H RAM 16,0 GB 🖬 GUI-Banksia Tech table: Engine KN/move NPS dep/mov time/mov mov/game time/game fails Aurora 1.11.4 425 83147 22.1 5.1 57.1 291.9 Floyd 0.9 3037 609625 13.2 5.0 63.3 315.4 GitChess 1.0 2614 490596 12.0 5.3 66.0 352.0 3 LizardBrain 6901 1454498 21.2 4.7 73.6 349.2 Tcheran 2.2 13600 2609032 13.8 5.2 69.0 359.7 Throttle 2.1 4339 963517 31.0 4.5 58.3 262.5 Titan 1.0.0 3869 743473 264.5 5.2 55.7 289.9 Topas 1.3.3 969 2

  Akira CE - winboard chess engine Author: Adam Adair Version: 1.0.19 Hotfix for a clock (Sorry, I keep breaking it every time. Hyperbullet (40/5s.) with ponder did work though! Currently without ponderhit mechanic implemented) Approx. CCRL rating: 1750,  CEDR ranking - engine not tested yet Akira CE 1.0.19 download

Chess engines: RukChess NNUE Author: Ilya-Ruk (Ilya Rukavishnikov)    Rating CEDR=3331 Chess engine with console interface, UCI support and several evaluation functions (including NNUE) RukChess 3.0.19 SEF.exe ( Simplified Evaluation Function) RukChess 3.0.19 Toga.exe ( Toga Log) RukChess 3.0.19 NNUE.exe ( Requires nn-62ef826d1a6d.nnue) RukChess 3.0.19 NNUE2.exe ( Requires net-7cf57d4dc994.nnue) book_.txt -  Opening book (378640 items; up to 12 moves) for RukChess 3.0.19 (for all executables).  Rename to book.txt to use (remove the underscore). Rating CEDR progres - RukChess Pedantic 0.6.0 9.5/13 +6 13 Games Drofa 4.1.0 7/13 +1 13 Games Stormphrax 4.0.0 3.5/13 -6 13 Games Lynx 1.1.0 11/11 +11 11 Games Protej 20231212a 9.5/11 +8 11 Games Obsidian 9.0 2/11 -7 11 Games Mida 2.3 7.5/10 +5 10 Games TACTICAL 161223 1/10 -8 10 Games Knightx 3.9 8.5/9 +8 9 Games Cool Iris 11.80 1.5/8 -5 8 Games Princhess 0.15.1 5/7 +3 7 Games Vividmind 1.0 6/6 +6 6 Games Austerlitz 1.4.7 6/6 +6 6 Games Lxna 0

The AbbyStein v2.8 engine achieved a very good result. Next are CorChess 20240502 and Raid 3.6 TR . All CEDR  333.448 games download  (01.05.2024 - 3'+3")  💾  870 games from the tournament download  👍 @chessenginesdiary  Country - Poland, City -  Malbork 🕓 Time 3'+3" 💻HP Pavilion i5-1035G1 8GB RAM 🖬 GUI-Banksia Tech table: Engine KN/move NPS dept/mov time/mov mov/game time/game fails AbbyStein v2.8 1768 371084 32.4 4.8 66.2 315.3 Alexander 1.3 4841 880038 25.4 5.5 66.6 366.1 Arasan 24.2.2 3323 527245 26.8 6.3 55.4 349.5 Berserk 13 4346 781140 31.1 5.6 61.7 343.1 Blue Marlin 15.7 3362 619490 33.1 5.4 65.3 354.6 Brainlearn 28.1 1980 356617 29.4 5.6 56.1 311.5 Caissa 1.18 4930 887815 27.9 5.6 59.8 332.3 Carp 3.0.1 1904 371562 20.8 5.1 66.2 339.4 Clover 6.1.19 4023 750873 25.9 5.4 71.6 383.4 Cool Iris 12.10 1926 329417 25.7 5.8 56.3 329.2 CorChess 20240502 1756 319325 26.3 5.5 61.6 338.6 Crystal 8 3146 534320 19.5 5.9 54.0 317.8

PlentyChess 1.0.0 achieved a very good result (37 points from 38 games). The following engines were also promoted: Equisetum 1.0, Clarity 6.0.0 and Alexander 1.3 . Promotion to the Amateur group A6:  PlentyChess 1.0.0, Equisetum 1.0, Clarity 6.0.0, Alexander 1.3 .  Relegation to the amateur group A8:  Omelette 1.0, Peripheral 1.1.3, Akira CE 1.0.18, Piglet 1.3.6. All CEDR  333.448 games download  (01.05.2024 - 3'+3")  💾  380 games from the tournament download  👍 @chessenginesdiary  Country - Poland, City -  Malbork 🕓 Time 3'+3" 💻Dell G15 SE, i7-11800H RAM 16,0 GB 🖬 GUI-Banksia Tech table: Engine KN/move NPS dep/mov time/mov mov/game time/game fails Akira CE 1.0.18 3328 660016 10.6 5.0 57.0 287.4 Alexander 1.3 26597 4953691 45.1 5.4 58.1 311.7 Belette 3.0.0 15267 3152608 39.6 4.8 67.4 326.5 Bitbit 1.2 3909 739343 23.1 5.3 65.2 344.5 1 Cadabra 2.0.1 6382 1354453 20.9 4.7 59.9 282.3 Clarity 6.0.0 12270 2472125 32.0 5.0 72.1 357.9 Delocto 0.7 2