Chess Engines Diary

CorChess is a clone of Stockfish maintained for better performance on long time controls, trying at least partially to fill the gap between regular tests and demands of correspondence players. Thanks to the Author Ivan Ivec Rating CEDR=3493 (15'+10") Rating CEDR=3472 (3'+3") CorChess 2022-05-29 NNUE - download Individual statistics -  CorChess 030122 62 games (+ 36,= 25,-  1), 78.2 % Fritz 17                      :   2 (+  2,=  0,-  0), 100.0 % GreKo 2021.08 NNUE            :   1 (+  1,=  0,-  0), 100.0 % Caissa 0.4                    :   2 (+  1,=  1,-  0), 75.0 % SlowChess 2.8                 :   2 (+  1,=  1,-  0), 75.0 % Igel 3.0.10                ...

🕒🕓 3'+3" 💻 Dell G15 SE, i7-11800H RAM 16,0 GB 🗔 GUI - Arena Table: Scid vs PC  💾  100 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  26.326 games  (3'+3")   P Engine CEDR Score Smallbrain Chg +/-/= 1: Smallbrain 1.2 2400 11.5 / 100 XXXXXXXX -160 (+9 -86 =5) 2: Slowchess 2.83 3121 10.0 / 10 1111111111 +11 (+10 -0 =0) 3: ClassicAra 0.9.9 2864 10.0 / 10 1111111111 +11 (+10 -0 =0) 4: Expositor 2WQ23 2971 10.0 / 10 1111111111 +11 (+10 -0 =0) 5: Hiarcs 15.5 3239 10.0 / 10 1111111111 +11 (+10 -0 =0) 6: K2 0.99 2403 10.0 / 10 1111111111 +49 (+10 -0 =0) 7: SugaR AI 2.50 2457 10.0 / 10 1111111111 +42 (+10 -0 =0) 8: Protej 0.6.2 2707 9.5 / 10 111111111= +9 (+9 -0 =1) 9: Colossus 2022a 2467 9.0 / 10 ...

This is prehistory 🙂 11 years ago:   Exam T04 CEDR 14.08.2011 Time: 1', 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 Pa Fr ET Pe Ur Ex NS S-B 1 Danasah 4.66 6.0/7 · = 1 1 = 1 1 1  18,00  2 Patriot 2006 5.5/7 = · 0 1 1 1 1 1  14,50  3 Francesca 0.18 5.0/7 0 1 · 1 1 1 1 0  16,00  4 ET.Chess 130108 4.0/7 0 0 0 · 1 1 1 1  7,50  5 Petir 4.999999 2.5/7 = 0 0 0 · 0 1 1  6,00  6 Uralochka 1.1b 2.0/7 0 0 0 0 1 · 0 1  3,50  7 Exchess 5.04 2.0/7 0 0 0 0 0 1 · 1  3,00  8 NSVChess v0.14 1.0/7 0 0 1 0 0 0 0 ·  5,00 

Stockfish - UCI chess engine, compiled by Giacomo Lorenzetti Rating CEDR=3497 (2 place) Timestamp: 1653843259 Small speedup in futility_move_count The speedup is around 0.25% using gcc 11.3.1 (bmi2, nnue bench, depth 16 and 23) while it is neutral using clang (same conditions). According to `perf` that integer division was one of the most time-consuming instructions in search (gcc disassembly). Passed STC: https://tests.stockfishchess.org/tests/view/628a17fe24a074e5cd59b3aa LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 22232 W: 5992 L: 5751 D: 10489 Elo +3.77 Ptnml(0-2): 88, 2235, 6218, 2498, 77 yellow LTC: https://tests.stockfishchess.org/tests/view/628a35d7ccae0450e35106f7 LLR: -2.95 (-2.94,2.94) <0.50,3.00> Total: 320168 W: 85853 L: 85326 D: 148989 Elo +0.57 Ptnml(0-2): 185, 29698, 99821, 30165, 215 This patch also suggests that UHO STC is sensible to small speedups (< 0.50%). closes https://github.com/official-stockfish/Stockfish/pull/4032 Download: Windows x64 for Ha...

Minic - UCI chess engine (C++ source) Author: Vivien Clauzon  Rating CEDR=3225 (20 place)  Minic, a Chess Engine Communication Protocol compliant open source chess engine by Vivien Clauzon, initially squashed inside a single C++ source file licensed under the GPL v3.0. As a weekend project, it started as 2000 lines of code mailbox approach using PVS with TT, NMP, LMP and eval based on psts, and evolved to a bitboard engine using HQ, lazy SMP, and Texel tuning to optimize its tapered eval [ source ]. Individual statistics:  Minic 3.14 -  70 games (+ 45,= 13,- 12), 73.6 % - Time: 15'+10" OliThink 5.10.1               :   2 (+  2,=  0,-  0), 100.0 % Critter 1.6a                  :   2 (+  1,=  1,-  0), 75.0 % Eman 7.40                     :   2 (+  0,=  1,-...

Pawn -  UCI alpha-beta chess engine, largely inspired by Stockfish. Author: Rui Coelho. Pawn 22-05-2022 for Android download

Best progress:  Caissa 0.5  +58 🕒🕓 3'+3" 💻 HP ENVY i5-8250U 8GB RAM 🗔 GUI Fritz 17 Table: Scid vs PC  💾  306 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  26.326 games  (3'+3")   Interesting game:  StockfishMZ 170522 - Koivisto 8.8  (1-0): Partia mi si� podoba�a (ChessBase 16) [Event "Fritz 17 New Engines Test"] [Site "Chess Engines Test"] [Date "2022.05.25"] [Round "1.17"] [White "StockfishMZ 170522"] [Black "Koivisto 8.8"] [Result "1-0"] [ECO "D24"] [WhiteElo "3450"] [BlackElo "3361"] [Annotator "0.28;0.32"] [PlyCount "119"] [EventDate "2022.05.24"] [EventType "tourn"] [SourceTitle "Fritz Engine Tournament"] [Source "Doe"] [TimeControl "180+3"] {[%e@p 0,95,19,31,14,-14,-11,0,0,6,53,60,39,27,2,-11,9,-19,31,33,40,4,1,6,45, -22,4,-57,151,147,149,181,158,165,...

  Smallbrain - UCI engine Author: Disservin Features Engine Bitboard representation Zobrist hashing Search Negamax framework Aspiration Window Alpha-Beta pruning fail-soft PVS Quiescence search Repetition detection Killer moves History heuristic MVV-LVA move ordering Null-move pruning Razoring Late-move reduction Evaluation Material evaluation Piece square table TC: 40/240 (4 minutes)         Engine         : RATING   POINTS     PLAYED    (%)     1 Smallbrain     : 2225.4   94.0     36.5      50   73.0%     2 Drofa 1.0.0    : 2051.0   ----     13.5      50   27.0%   TC: 40/120+1         Engine                              : RATING      ...

Best progress:  Zahak 10.0  +48 🕒🕓 15'+10" 💻 HP Pavilion i5-1035G1 8GB RAM 🗔 GUI Fritz 17 Table: Scid vs PC  💾  306 tournament games   💾 All games CEDR  26.266 games  (15'+10")  and  26.326 games  (3'+3")   Interesting game:  Fisherov 0.98k - Crystallite 1.1a (1-0): Partia mi si� podoba�a (ChessBase 16) [Event "CEDR-New Engines Tournament"] [Site "Chess Engines Diary"] [Date "2022.05.27"] [Round "2.16"] [White "Fisherov 0.98k"] [Black "Crystallite 1.1a"] [Result "1-0"] [ECO "E04"] [WhiteElo "3511"] [BlackElo "3314"] [Annotator "0.46;0.12"] [PlyCount "137"] [EventDate "2022.05.14"] [EventType "tourn"] [SourceTitle "Fritz Engine Tournament"] [Source "B"] [TimeControl "900+10"] {[%e@p 0,137,25,26,18,-17,3,6,18,-17,-26,-6,9,22,32,-9,-32,74,59,70,45,-40,-88, -88,-93,-90,-109,-155,-1...