Chess Engines Diary

Blunder - UCI chess engine Author: Christian Dean, Rating CEDR= 2569 v.8.0.0 This release is very similar in spirit to that of 5.0.0, in the sense that much of the work done has been improvement and optimization of the code base through slow, large-scale refactoring, which has brought about Elo gains, although several new strength-gaining features have been implemented. Blunder 8.0.0 is estimated to be about 50 Elo stronger than 7.6.0 at bullet time controls. It'd be impossible to list every last change, but a summary of some of the major areas will be listed below. Improvements to Blunder's move generator have been made, improving it's speed by 10-15%. Thanks in particular to Koivisto, for giving me the idea to store the hash of a position  as part of it's irreversible state, leading to a nice speed increase. Small tweaks have been made to the UCI that's made it a bit more user friendly and hopefully more straightforward to use. Magic bitboard generation code and

Supra - UCI chess engines Author: Pedro Mourao Correia    Website Ratings: JCER=1334, Individual statistics: Supra 26.0 76 games (+  8,=  2,- 66), 11.8 %, Time: 3'+3" Doch 1.34                     :   2 (+  0,=  0,-  2),  0.0 % HonzovySachy 2.0 2019-12-07   :   6 (+  0,=  0,-  6),  0.0 % Pulse 1.7.1                   :   3 (+  3,=  0,-  0), 100.0 % Cicada 0.1                    :   1 (+  0,=  1,-  0), 50.0 % RamJet 0.14                   :   3 (+  0,=  0,-  3),  0.0 % Chezzz 1.0.3                  :   2 (+  0,=  0,-  2),  0.0 % BBChess 1.3b                  :   2 (+  0,=  0,-  2),  0.0 % Alaric 707                    :   2 (+  0,=  0,-  2),  0.0 % Adamant 1.7                   :   2 (+  0,=  0,-  2),  0.0 % Chaturanga 243                :   4 (+  0,=  0,-  4),  0.0 % Dabbaba 7.49                  :   3 (+  0,=  0,-  3),  0.0 % Adam 3.3                      :   4 (+  0,=  0,-  4),  0.0 % Superpawn 110                 :   6 (+  1,=  0,-  5), 16.7 % Quarkcorbit         

This is prehistory 🙂 11 years ago:   CEDR Tournament-01 28-30.08.2011 Time: 3', 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

  🕒🕓 3'+3" 💻 Dell G15 SE, i7-11800H RAM 16,0 GB 🗔 GUI-Fritz 17  Table: Banksia  💾  200 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  32.342 games  (3'+3")   Match Fisherov chess monk - Proteus 008 (Fritz Table)

  MEGA Dysk (for donors) - update 13 new engines. Engines (Windows): Alexandria 2.0.0 NNUE.7z Alexandria 2.1.0.7z Alexandria 2.2.0.7z Corchess 210622.7z Devre 3.0.7z Gargantua 1.0.7z Jackychess 0.12.0.7z MzingaCpp 0.9.7.7z MzingaCpp 0.9.8.7z Odonata 0.6.2.7z Prophet 4.2.7z Smallbrain 4.0.0 NNUE.7z StockNemo 2.0.0.1.7z More

🕒🕓 3'+3" 💻 HP Pavilion i5-1035G1 8GB RAM 🗔 GUI-Fritz 17  Table: Scid vs PC  💾  264 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  32.342 games  (3'+3")  

StockNemo A Chess Engine written in C# trying to find good moves like Stockfish. UCI Compatible. Author: Shaheryar Sohail Moorish Idol 2.0.0.1 download

UCI chess engines: Devre Author: Ömer Faruk Tutkun  Rating CEDR=2908 Devre is an open-source UCI compatible chess engine written in C as a hobby project.The code is a bit badly written now but I'll try to make it cleaner and more efficent in my free time. Although Devre is an original chess engine written from scratch, I got great help from chessprogramming wiki , talkchess forum,stcokfish discord ,and some open-source C engines: Ethereal, Vice, CPW. v.3.0 Changes Fixed some bugs SEE pruning in qsearch and Alpha Beta Using SEE in move ordering Futility Pruning Switching from mailbox to bitboards New net (trained with https://github.com/OmerFarukTutkun/NNUETrainer ) Added a Linux support Embed nnue to exe ... Although 7-8 months have passed from version 2.0, I couldn't make much progress. This version is 100 elo stronger than the previous one at STC. Thanks to the testers who tested Devre, and the chess engine developers that helped me while developing my engine. Devre 3.0 down

🕒🕓 3'+3" 💻 Lenovo Z710 i7-4710MG 8GB RAM 🗔 GUI-Fritz 15 Table: Scid vs PC  💾  110 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  32.342 games  (3'+3")   x

Chess engine: Alexandria  Author: Normand M. Blais v.2.2.0 Most importantly of all a bug in the repetition detection was fixed, rfp was introduced in the search and there was some minor code cleanup. Overall thanks to the fixed bug and the rfp this version gains a staggering 60-80 elo in self play compared to 2.1 and should gain 30-40 elo against other engines. Alexandria 2.2.0 NNUE download 

System is a AMD Ryzon 3950X with 16 CPU,  64MB RAM Windows 10 Enterprise,  GPU NVIDIA  RTX 3060 ti.  Shredder 13 GUI.  For Every Engine only 1 CPU and 512 Hashtables,  Book Perfect 2021  Time 3'+3"   270 games download 💾 All games CEDR  26.266 games  (15'+10")  and  32.342 games  (3'+3")  

🥇   Little Goliath 3.15.4 , 🥈  Odonata 0.6.2 , 🥉  Lozza 2.2    Promoted to Amateur League group E2:  Little Goliath 3.15.4 and Odonata 0.6.2 .  Relegation to Amateur League group E4: Ceechess 1.4 and SeeChess 1.2 .  🕒🕓 3'+3" 💻 HP ENVY i5-8250U 8GB RAM 🗔 GUI-Arena 17 Table: Scid vs PC  💾  240 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  32.342 games  (3'+3")   Amateur and new engines Group E1 Edition 05 – temp 3’+3” Rating Score note 1 Devre 2.0 2877 26.0 / 30 promote 2 Mantissa 3.3.0 NNUE 2965 25.0 / 30 promote 3 Vafra 3.3.2 NNUE 2846 23.5 / 30 4 NiCim 3.4.1 2773 20.5 / 30 5 Cheese 3.0.1 2674 18.0 / 30 6 Asymptote 0.8 2769 18.0 / 30 7 Nalwald 15 2785 16.5 / 30 8 Olithink 5.10.1 2