Chess Engines Diary

Quarterfinals Chess Engines Diary CUP 2022 - group Q-02 (temp:60'+10")  2022.08.21-30 HP ENVY i5-8250U 8GB RAM,   Time: 60'+10", GUI-Arena   110 games download Promote:  Uralochka 3.37c, Clover.3.1, Coiled 1.1, Toga IV . P Engine CEDR Score Ur Cl Co To St Co To Ch Fr De Cl Chg 1: Uralochka 3.37c 3245 18.0 / 20 XX 1= 1= =1 11 1= 11 11 11 11 11 +18 2: Clover.3.1 3181 14.5 / 20 0= XX =0 11 =1 11 10 11 == 11 11 -6 3: Coiled 1.1 3220 14.0 / 20 0= =1 XX == == 1= 01 1= 11 11 11 -18 4: Toga IV 3046 13.0 / 20 =0 00 == XX =1 == 11 1= 11 =1 11 +8 5: Stash 33.0 3094 13.0 / 20 00 =0 == =0 XX 1= =1 11 11 11 11 -4 6: Counter 4.1 2977 10.0 / 20 0= 00 0= == 0= XX 11 == == =1 11 -6 7: Tomcat 1.0 2847 8.5 / 20 00 01 10 00 =0 00 XX 0= 1= 11 11 +14 8: Cheng4 0.41 2823 8.0 / 20 00

StockNemo - UCI engine Rating CEDR=2403 A Chess Engine written in C# trying to find good moves like Stockfish. UCI Compatible. Author: Shaheryar Sohail v.5.3.0.0: Refactor LMR into an improved conditionally aggressive version. by @TheBlackPlague in #65 Implement Depth 9 data-based Neural Network. by @TheBlackPlague in #66 Stocknemo  Stingray  5 .3.0.0 download from page

MadChes  - UCI engines,  Author - Erik Madsen Rating JCER=2441   MadChess 3.1 download Individual statistics: MadChess 3.0 - 100 games  (+ 36,= 19,- 45), 45.5 % Betsabe II 1.96               :   4 (+  2,=  1,-  1), 62.5 % Fridolin 3.10                 :   2 (+  0,=  0,-  2),  0.0 % ECE 20.1                      :   2 (+  1,=  1,-  0), 75.0 % Dimitri 5.2.3                 :   4 (+  2,=  1,-  1), 62.5 % Supernova 2.4                 :   4 (+  2,=  2,-  0), 75.0 % Zevra 2.5                     :   4 (+  1,=  1,-  2), 37.5 % Mantissa 3.3.0                :   2 (+  0,=  1,-  1), 25.0 % K2 0.99                       :   4 (+  1,=  1,-  2), 37.5 % Knightx 3.2                   :   2 (+  1,=  0,-  1), 50.0 % CT800 1.43                    :   6 (+  4,=  0,-  2), 66.7 % Raven 1.20                    :   4 (+  0,=  3,-  1), 37.5 % Novice 3.1                    :   4 (+  1,=  1,-  2), 37.5 % Odonata 0.5.1                 :   2 (+  2,=  0,-  0), 100.0 % Colossus 2021b                :   2 (+  1,=

This is prehistory 🙂 11 years ago:   3 Rank CEDR 22.10.2011 Time: 1', Acer, Intel Celeron D CPU 3.46GHz with 2,0 GB Memory  Microsoft Windows XP Home Edition x32 GUI: Arena 3.0    All games 2011 download R Engine Score Fr Al Ha Ga Ki Co Ga Cu An Hu Ki If Bo Re Fr Qu 01 Fritz 13 14.0/15 · 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 02 Alaric 707 13.0/15 1 · 1 1 1 = 1 1 1 1 = 1 1 = = 1 03 Hamsters 0.7.1 9.0/15 0 0 · 0 1 = 1 0 = 1 1 1 1 0 1 1 04 Gandalf 6.0 8.5/15 0 0 1 · 0 = = 1 = 1 1 = 0 1 = 1 05 Kiwi 0.6d 8.0/15 0 0 0 1 · 1 1 0 1 = 1 0 = 1 0 1 06 Colossus 2006f 7.5/15 0 = = = 0 · 0 = 1 = 1 = 0 = 1 1 07 GarboChess 3 x32 7.5/15 0 0 0 = 0 1 · 1 0 1 0 1 1 0 1 1 08 Cuckoochess 1.10 7.5/15 0 0 1 0 1 = 0 · = 0 = 0 1 1 1 1 09 AnMon 5.75 7.5/15 0 0 = = 0 0 1 = · 0 1 1 0 1 1 1 09 Hussar 0.4 7.5/15 0 0 0 0 = = 0 1 1 · 0 1 1 1 = 1 11 King 3.5 UCI 7.0/15 0 = 0 0 0 0 1 = 0 1 · = 1 1 1 = 12 Ifrit m1.5 6.5/15 0 0 0 = 1 = 0 1 0 0 = · 1 0 1 1 13 Bobcat 20110414 6.5/15 0 0 0 1 = 1 0 0 1

CT800 - UCI chess engine,  Homepage Rating JCER=2385    Author: Rasmus Althoff Changes from V1.43 Limited mainboard LED flashing to three flashes after reset. Reduced key repeat timeout from 100 ms to 50 ms. Improved mate search mode. Improved general performance. Improved pawn hash collision handling. Fine-tuned pruning and eval. Removed null move threat move. More late move reductions. Fixed legality checks in the book tool (no engine impact). CT800 1.44 - download

  Rusty Pigeon - a nother UCI chess engine written in Rust. This time it should be able to beat you up consistently and without afterthoughts. - UCI protocol (play against it in your favourite chess program) with simple time management - Implemented totally from scratch using bitboards, zobrist hashing, magics, all the good stuff - Interactive play from command line - WASM build to play against the engine on any web app - Lichess bot (online randomly, it will be online 24/7 once I find a good home for it) - (soon) Tauri app to play against the engine locally with a nice GUI github:https://github.com/TrinTragula/rusty-pigeon/releases/tag/v1.0.0 Rusty Pigeon 1.0.0 download

  From author: Kayra chess engine is a Stockfish based engine and it's an early development version. I have been working on this chess engine for a short time. Kayra is not an another Stockfish clone. I made very serious changes in the most critical parts of Stockfish, especially in the evaluation section. I made very agressive changes more than 50 parameters in the evalution code. I made very aggressive changes at psqt and pawns sections. I changed more than 250 parameters at psqt and pawns section. I weakened Stockfish a lot at the start of all these critical changes, but I'm finally getting close to balancing it. Although I made very critical changes in Stockfish codes and more than 300 parameters, the fact that Kayra didn' t perform badly gave me hope for the future. This version of Kayra is an early test version. If it reaches the level I want, there is no doubt that I' ll publish Kayra as open code source chess engine. Rating CEDR=3479 Individual statistics:  Kay

  Chess engine: Viridithas v.2.6.0: The new features are (roughly in order of addition): better promotion move ordering Static Exchange Evaluation pruning tempo evaluation threat evaluation evaluation iteratively learned on self-play Viridithas 2.6.0 download github:https://github.com/cosmobobak/virtue/releases/tag/v2.6.0

 🕒🕓 3'+3" 💻  Lenovo Ideapad 330, i3-8130U, 12GB RAM   🗔 GUI-Arena   Best progress: Slowchess 2.9 +16 💾 All games CEDR  26.266 games  (15'+10")  and  44.746 games  (3'+3")   💾   24 tournament games   P Engine CEDR Score Slow Aras Rubi Topp Chg +/-/= 1: Slowchess 2.9 3370 9.5 / 12 XXXX 1=1= ==1= 1111 +16 (+7 -0 =5) 2: Arasan 23.4 3314 7.5 / 12 0=0= XXXX ==1= 1111 +8 (+5 -2 =5) 3: RubiChess 20220813 3311 6.0 / 12 ==0= ==0= XXXX 1011 -7 (+3 -3 =6) 4: Topple 0.8.1 3137 1.0 / 12 0000 0000 0100 XXXX -19 (+1 -11 =0)

This is prehistory 🙂 11 years ago:   2 Rank CEDR 21-22.10.2011 Time: 1', Acer, Intel Celeron D CPU 3.46GHz with 2,0 GB Memory  Microsoft Windows XP Home Edition x32 GUI: Arena 3.0    All games 2011 download R Engine Score Da Ga Re Ka Ru N2 He An Pe Di Ca Ph Ma Na S-B 01 Daydreamer 1.75 19.0/26 · · 1= 11 0= 10 0= 01 11 10 11 =1 11 11 11  225,00  02 Gaviota 0.84 18.5/26 0= · · 01 10 11 1= 10 11 11 11 == 10 =1 11  222,25  03 Redqueen 1.0.0 16.5/26 00 10 · · 11 01 =1 =0 10 =0 11 11 11 =1 1=  194,25  04 Kaissa 1.8a 16.0/26 1= 01 00 · · 10 11 10 01 00 1= =1 =1 11 11  191,25  05 Ruffian 1.0.5 16.0/26 01 00 10 01 · · 00 01 11 11 == 11 =1 1= 11  181,00  06 N2 15.0/26 1= 0= =0 00 11 · · 11 01 0= 11 0= =1 01 11  182,25  07 Hermann 2.6 x32 13.0/26 10 01 =1 01 10 00 · · =0 1= 10 1= 10 10 01  166,25  08 Anatoli 0.35k 13.0/26 00 00 01 10 00 10 =1 · · =1 01 01 01 11 11  141,75  09 Pepito 1.59.2 11.5/26 01 00 =1 11 00 1= 0= =0 · · 01 01 01 0= 01  150,50  10 Diablo 0.51 10.5/