Chess Engines Diary

  JCER 2020 Cup - Qualifying group no.4 Temp 60' + 10"  GUI - Fritz 17, After 39/90 games

  120.064 games download     PDF file

  JCER 2020 Cup - Qualifying group no.4 Temp 60' + 10"  GUI - Fritz 17,  After 24/90 games

Vafra is a free (cloned from Crafty ) Winboard chess engine. Author:  Robert Jurjević    Rating JCER=2764 Vafra 2.17.0 - download All files (games, tables and engines) - download from page

JCER 2020 Cup - Qualifying group no.4 Temp 60' + 10"  GUI - Fritz 17 After 15/90 games

BanksiaGUI is a freeware chess Graphical User Interface. Changes v 0.37: Fixed bugs: PGN parser/creator bugs on promotions Download dialog shows nothing Crash when reading EDP books Some small bugs: sometimes missing display mate on Evaluation panel; collect wrongly data from PGN games to create stats Some small improvements New features:   Support Chinese (translated by Qingyuan Ouyang) Show the number of tournament games when changing parameters Export/copy PGN games from Tournament list Make a castle move by dropping King into Rook (it works before for Chess960 only) Download and manage NNUE networks. However, this feature may be changed later, depending on Stockfish design Banksia 0.37 download

Congratulations to the winners! 🥇 Spark 1.0 - Author: Allard Siemelink, 🥈 Excalibur - Author: Jim Fan, 🥉 DisasterArea 1.65 - Author: Jochen Peussner. All files (games, tables and engines) - download from page Temp 3'+3" Intel Core i7 7,9 GB GUI  Arena 3.5.1 Book  Perfect 2019 All JCER games 114.603 Table created  Scid vs PC JCER League Tournament:   380 games

CFish - UCI chess engine, Rating JCER=3114 "CFish, a port of Stockfish written in plain C by Ronald de Man, first published on GitHub in July 2016. Possibly inspired by the asmFish project to speed up Stockfish using a programming language closer to the machine, the purpose of CFish is to explore possible optimization issues of C versus C++ compilers" [Chess Programming Wiki]. Cfish NNUE 270820 - download All files (games, tables and engines) -  download from page

OliThink is an open-source WB engine by Oliver Brausch MSYS2/MinGW static builds by T. Poppins Rating JCER=2730 OliThink 5.6.7 - download All files (games, tables and engines) -  download from page

ShashChes s - UCI chess engine. Rating JCER=3196 ShahChess derived from Stockfish family chess engines.  Author: Joost VandeVondele Removed USE NNUE combo: only pure NNUE or classical for ShashChess A lot more hard positions solved and at least the same playing strength as Stockfish hybrid approach. This will also speed up the engine. ShashChess 13.2 - download All files (games, tables and engines) - download from page

Marvin - Winboard/UCI chess engine Rating JCER=2932 , Author - Martin Danielsson New features MultiPV support Improvements Improved LMR formula Evaluation of tempo Switched to using only one slot for killer moves Fixed issues with with ordering of promotion moves Use PGO for builds Marvin 4.0.0 - download All files (games, tables and engines) - download from page

CT800 - UCI chess engine,  Homepage Rating JCER=2700   Author: Rasmus Althoff CT800 1.41 - download All files (games, tables and engines) -  download from page

JCER 2020 Cup - Qualifying group no.3 Temp 60' + 10"  GUI - Fritz 17 After 9/90 games

JCER 2020 Cup - Qualifying group no.2 Temp 60' + 10"  GUI - Fritz 17  i5-1035G1 CPU 90 games Promotion: Baislicka dev.ac327fd  and  Clunk 1.1 All files (games, tables and engines) -  download from page

Congratulations to the winners! Spike 1.4 - Authors: Ralf Schäfer and Volker Böhm, Combusken 1.3.1 - Author: Marcin Henryk Bartkowiak, Caligula 0.9g - Author: Pedro Castro. All files (games, tables and engines) - download from page Temp 3'+3" Intel Core i7-4710MQ 7,9 GB GUI  Arena 3.5.1 Book  Perfect 2019 All JCER games  114.603 Table created  Scid vs PC JCER League Tournament:   380 games

CiChess - UCI chess engine Rating JCER=3437 CiChess NNUE 250820 - download All files (games, tables and engines) -  download from page

Stash - UCI chess engine Author:  Morgan Houppin Rating JCER=2739 Stash 19.2 download All files (games, tables and engines) - download from page

Stockfish - UCI chess engine, compiled by Sami Kiminki Rating JCER=3307 Timestamp: 1598263408 Allow TT entries with key16==0 to be fetched Fix the issue where a TT entry with key16==0 would always be reported  as a miss. Instead, we'll use depth8 to detect whether the TT entry is  occupied. In order to do that, we'll change DEPTH_OFFSET to -7 (depth8==0) to distinguish between an unoccupied entry and the  otherwise lowest possible depth, i.e., DEPTH_NONE (depth8==1). To prevent a performance regression, we'll reorder the TT entry fields  by the access order of TranspositionTable::probe(). Memory in general works fastest when accessed in sequential order. We'll also match the  store order in TTEntry::save() with the entry field order, and  re-order the 'if-or' expressions in TTEntry::save() from the cheapest  to the most expensive. Finally, as we now have a proper TT entry occupancy test, we'll fix a  minor corner case with hashfull repor

Temp 3'+3" Intel Core i7 7,9 GB GUI Fritz 17 Book  Perfect 2019 All JCER games 114.603 Table created  Scid vs PC JCER League Tournament:   180 games All files (games, tables and engines) - download from page

JCER 2020 Cup - Qualifying group no.2 Temp 60' + 10"  GUI - Fritz 17 After 72/90 games * Ramjet 0.14 - engine errors

Stockfish - UCI chess engine, compiled by Vizvezdenec Rating JCER=3307 Timestamp: 1598218023 Introduce movecount pruning for qsearch() If in quiescence search, we assume that me can prune late moves when: a) the move ordering count of the move is : moveCount > abs(depth) + 2 b) we are not in check c) the late move does not give check d) the late move is not an advanced pawn push Modification of an original idea by @VoyagerOne. STC https://tests.stockfishchess.org/tests/view/5f40581787a5c3c63d8f535f LLR: 2.96 (-2.94,2.94) {-0.25,1.25} Total: 132848 W: 14999 L: 14661 D: 103188 Elo +0.88 Ptnml(0-2): 684, 11242, 42309, 11430, 759 LTC https://tests.stockfishchess.org/tests/view/5f4226da87a5c3c63d8f5412 LLR: 2.98 (-2.94,2.94) {0.25,1.25} Total: 12008 W: 678 L: 551 D: 10779 Elo +3.67 Ptnml(0-2): 8, 485, 4899, 596, 16 Bench: 3749974 Stockfish 20082323 and NNUE download

Temp 3'+3" Intel Core i7 7,9 GB GUI Fritz 17 Book  Perfect 2019 All JCER games 114.603 Table created  Scid vs PC JCER League Tournament:   240 games All files (games, tables and engines) - download from page

Chess engines letter Bah-Bo download

JCER 2020 Cup - Qualifying group no.2 Temp 60' + 10"  GUI - Fritz 17 After 59/90 games * Ramjet 0.14 - engine errors

J CER 2020 Cup - Qualifying group no.2 Temp 60' + 10"  GUI - Fritz 17 After 48/90 games Ramjet 0.14 - engine errors

Stockfish - UCI chess engine, compiled by Unai Corzo Rating JCER=3307 Timestamp: 1598025854 Simplify away internal iterative deepening Remove the iterative deepening step. Instead, employ a depth reduction if the position is not in TT and on the PV. STC https://tests.stockfishchess.org/tests/view/5f3ce6eaa95672ddd56c637e LLR: 2.97 (-2.94,2.94) {-0.50,1.50} Total: 41096 W: 4421 L: 4257 D: 32418 Elo +1.39 Ptnml(0-2): 207, 3259, 13460, 3407, 215 LTC (old) https://tests.stockfishchess.org/tests/view/5f3d7d4fa95672ddd56c640b LLR: 2.92 (-2.94,2.94) {-1.50,0.50} Total: 26032 W: 1320 L: 1309 D: 23403 Elo +0.15 Ptnml(0-2): 22, 1152, 10654, 1169, 19 LTC (new) https://tests.stockfishchess.org/tests/view/5f3e31e0a95672ddd56c6464 LLR: 2.95 (-2.94,2.94) {-0.75,0.25} Total: 34160 W: 1844 L: 1766 D: 30550 Elo +0.79 Ptnml(0-2): 33, 1533, 13876, 1599, 39 bench: 3849173 Stockfish 20082118 and NNUE download

Stash - UCI chess engine Author:  Morgan Houppin Rating JCER=2739 Stash 19.1 download All files (games, tables and engines) - download from page

Stockfish - UCI chess engine, compiled by SFisGOD Rating JCER=3307 Timestamp: 1597950757 Reintroduce last captures extension STC: LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 34840 W: 3834 L: 3682 D: 27324 Elo +1.52 Ptnml(0-2): 153, 2767, 11455, 2865, 180 https://tests.stockfishchess.org/tests/view/5f3bb380b38d442594aabefc LTC: LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 15832 W: 890 L: 776 D: 14166 Elo +2.50 Ptnml(0-2): 17, 669, 6429, 785, 16 https://tests.stockfishchess.org/tests/view/5f3c46a0a95672ddd56c632a Bench: 4348811 Stockfish 20082021 and NNUE download

Congratulations to the winners! 🥇 Gnucheese 1.00 - Authors: Chua Kong-Sian (Singapore), Stuart Cracraft (USA), Lukas Geyer, Simon Waters, Michel Van den Bergh, 🥈 Ruydos 1.1.11 - Author: Álvaro Begué, 🥉 Cheese 2.1 - Author: Patrice Duhamel. All files (games, tables and engines) - download from page Temp 3'+3" Intel Core i7-4710MQ 7,9 GB GUI  Arena 3.5.1 Book  Perfect 2019 All JCER games 114.603 Table created  Scid vs PC JCER League Tournament:   380 games

Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler) Rating JCER - 3275  (2st place) Raubfisch X43a2 and GTZ22a2_NNUE - download All files (games, tables and engines) - download from page

DON - UCI chess engine Author: Ehsan Rashid DON NNUE 2020-08-20download All files (games, tables and engines) -  download from page

JCER 2020 Cup - Qualifying group no.2 Temp 60' + 10"  GUI - Fritz 17 After 36/90 games

17 chess engines: BrainLearn 10, Cfish NNUE 180820, Combusken 1.3.1, CorChess NNUE 170820, Foxsee 5.1.2, Honey XI-r5, Igel 2.7.0 NNUE, OliThink 5.6.5, Pedone 2.1, RubiChess 1.8, ShashChess 13, Stockfish NNUE 2020-08-11, Stockfish NNUE 2020-08-21, StockfishMZ NNUE 180820, Stockfish-nnue-2020-07-19, Stockfish-nnue-2020-08-11, Velvet 1.0. GUI - Banksia 0.36b.7z ================================================   Full acces to the folder: CHESS ENGINES - about 3000 files! If you do not want to wait a long time for download donate a minimum of 15$, enter your email - you will gain full access to the folder with chess engines and games, tables, etc. My email: jotes @ go2.pl

JCER 2020 Cup - Qualifying group no.1 Temp 60' + 10"  GUI - Fritz 17   i5-1035G1 CPU 90 games Promotion:  Skiull 0.5 and  Kouri 1.15 All files (games, tables and engines) - download from page

NNUE = efficiently updateable neural network backwards. Stockfish NNUE 2020-08-21 download