Chess Engines Diary

Andscacs - UCI chess engine   Author - Daniel Jose Queralto CEDR rating = 3090 Andscacs 0.92165 download All files (games, tables and engines) -  download from page We have stopped posting files on Shortest. Currently, you can find the current links on the DOWNLOAD page. Most of them are placed on Katfile servers. If you do not want to wait long with the download, you can support our work and become a donor. As a thank you, we provide you with a link to the MEGA drive, where you can download the engines and other files without waiting. More information can be found on the DONORS page.

Toga II - UCI chess engines Author - Jerry Donald Rating JCER=2719 Toga II 4.01 download All files (games, tables and engines) - download from page

Sting sf - UCI chess engines (based on Stockfish 2.1.1) Author - Marek Kwiatkowski Rating JCER=2985 Sting sf 9.5 download All files (games, tables and engines) - download from page

Galjoen chess engines WB/UCI Author: Werner Taelemans Rating JCER = 1974 Galjoen 0.37.2 - download All files (games, tables and engines) - download from page

Skiull - UCI chess engine Rating JCER=1654 Homepage Skiull 0.3 - download All files (games, tables and engines) - download from page

Temp 3' + 3" Hardware: Intel Core i3-3217U CPU 3,9 GB Memory , Windows 10 x64 462 Tournament games , GUI- Arena 3.5.1 ,  161.651 JCER games ,  until 31.12.2016   64.860 JCER games (from 01.01.2017)  JCER League Book: Perfect 2017 ,   Table created - Scid vs PC All files (games, tables and engines) - download from page

Only for donors added: 49 chess engines: Acqua, Amoeba 2.7, asmFish 2017-12-20, BrainFish 171212, BrainFish 171217, BrainFish 171226, Ceibo 0.3.65, CFish 161217, Chess22k 1.7, ChessBrainVB 3.60, ChessBrainVB 3.61, CiChess 1.8 161217, Ethereal 8.60, Ethereal 8.61, Fizbo 2, Fruit reloaded 3.21, ISA 2.0.61, Jumbo 0.5.27, Jumbo 0.6.10, Koedem 1.0, Laser 1.5, McBrain 4.0, Nemorino 4.00, OpenTal 1.0, Raubfisch ME262 GTZ16a, Raubfisch ME262 GTZ16a1, Raubfisch ME262 GTZ16a2, Raubfisch X37a, Raubfisch X37a1, Raubfisch X37a2, Scorpio 2.79, Sf 211217MZ, Snowy, Stockfish 17120614, Stockfish 17121013, Stockfish 17121115, Stockfish 17121708, Stockfish 17121709, Stockfish 17121709_Lemaire, Stockfish 17121816, Stockfish 17121816_VandeVondele, Stockfish 17122610, Stockfish 17122610_VandeVondele, Sugar XPrO 211217, Texel108a5, TinyChess 146-64, TogaII 4.0, Tordenskiold, Tucano 7.00. and 3 book: Cerebellum_light 171212,  Cerebellum_light 171217,  Cerebellum_light 171226.

Toga II - UCI chess engines Author - Jerry Donald Rating JCER=2719 Toga II 4.0 download All files (games, tables and engines) - download from page

Jumbo - winboard chess engine   Important notes: The Win64 binary was built using CygWin GCC 5.4.0 and requires the following DLLs that are part of the CygWin installation: cyggcc_s-seh-1.dll cygstdc++-6.dll cygwin1.dll Rating JCER=2182 Author - Sven Schüle, Berlin (Germany) ⏯ Jumbo 0.6.10 - download All files (games, tables and engines) - download from page

Chess22k - UCI (java) chess engine Author - Evgeniy Korniloff Homepage Rating JCER=2612 Chess22k 1.7 - download

Nemorino - UCI chess engine Author - Christian Günther Rating JCER=2891 Nemorino 4.00 download from page

Laser - UCI chess engine Authors: Jeffrey An & Michael An Rating JCER=2862 Laser 1.5 - download from page

Koedem   - UCI chess engine (java). Author: Kolja Kühn (Germany) Koedem 1.0 - download All files (games, tables and engines) - download from page

ChessBrainVB -  winboard chess engine Rating JCER=2840 Author - Roger Zuehlsdorf   ChessBrainVB 3.61 - download

Ceibo - UCI chess engine Author - Federico Rojo Ceibo 365 download All files (games, tables and engines) -  download from page

BrainFish - UCI chess engine CEDR Rating=3378 Information from the author: Brainfish is a standard Stockfish chess engine extended by a general book format that is capable of handling a reduced part of Cerebellum, which is an innovative chess opening and playing book. In Brainfish, the book moves are only used in engine games, not in analysis mode. All moves in the published book Cerebellum _light.bin generated by Cerebellum were calculated by using Stockfish as analysis engine, without using statistics. Then those moves where recalulated by the Cerebellum Library using a graph algorithm that makes all scores in the library consistant. Consistant scores means for example, in case the starting position has a score of 0.2 and a best move is 1.e4, the position after 1.e4 must have the score -0.2. Additionally, some others properties are found, like the best main line of a position and possible Transitions. Hence, when Brainfish is playing moves that are in the Cerebellum book, ...

Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler) Rating JCER - 3388 Raubfisch X37a2 - download All files (games, tables and engines) - download from page

Stockfish , chess engine UCI Rating JCER = 3389 🔬 Author: Guenther Demetz  Timestamp: 1514281344  Include x-ray attacks through all queens independently of the color.  When calculating attacks from rooks/bishops current master includes x-rays through own queen. This patch includes also x-rays through opponent queen.  Credits go to Brian who inspired for this idea  https://groups.google.com/forum/?fromgroups=#!topic/fishcooking/Z3APRYpQeMU  STC:  LLR: 2.96 (-2.94,2.94) [0.00,5.00]  Total: 41549 W: 7544 L: 7244 D: 26761  Elo 2.05 [-0.29,4.19] (95%)  LTC:  LLR: 2.96 (-2.94,2.94) [0.00,5.00]  Total: 110010 W: 14208 L: 13739 D: 82063  Elo 1.20 [-0.27,2.55] (95%)  bench: 5544445 ⭐⭐⭐    Stockfish 17122610 - download

Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler) Rating JCER - 3388 Raubfisch ME262 GTZ16a2 - download All files (games, tables and engines) - download from page

Rating JCER=3349 McBrain is a Stockfish based chess engine ( directly derived from the Stockfish source). Stockfish is currently the strongest chess engine in the world. McBrain also features the Cerebellum book and code used by Brainfish (a Stockfish (SF) based engine by Thomas Zipproth - with the Cerebellum book enabled it will play about 30 ELO stronger than Standard Stockfish. McBrain 4.0 - download All files (games, tables and engines) - download from page

Fizbo - UCI chess engine Fizbo - homepage Rating JCER=3093 Author - Youri Matiounine Fizbo 2 download All files (games, tables and engines) - download from page

Stockfish , chess engine UCI Rating JCER = 3389 🔬 Author: Joost VandeVondele  Timestamp: 1514281242  Upon changing the number of threads, make sure all threads are bound  The heuristic to avoid thread binding if less than 8 threads are requested resulted in the first 7 threads not being bound.  The branch was verified to yield a roughly 13% speedup by @CoffeeOne on the appropriate hardware and OS, and an earlier version of this patch tested well on his machine:  ELO: 9.24 +-4.6 (95%) LOS: 100.0%  Total: 5000 W: 634 L: 501 D: 3865  To make sure all threads (including mainThread) are bound as soon as the total number exceeds 7, recreate all threads on a change of thread number.  To do this, unify Threads::init, Threads::exit and Threads::set are unified in a single Threads::set function that goes through the needed steps.  The code includes several suggestions from @joergoster.  Fixes issue #1312  No functional ...

♙GUI-Arena ♙ Temp 60' ♙Top 10 engines Rating list JCER: 1.  Stockfish 261217 JCER=3389 2.  Raubfisch X37a2 JCER=3388 3. SugaR XPrO 211217 JCER=3378 4. Houdini 6.02 JCER=3309 5. Komodo 11.2.2 JCER=3306 6. Fire 6.1 JCER=3184 7. Roc 0.8 (2017Jun17) JCER=3102 8. Gull 3.1JV JCER=3094 9. Andscacs 0.921 JCER=3090 10. Fizbo 2  JCER=3090 More 

Temp P60' Hardware: Intel Core i7-4710MQ with 7,9 GB Memory , Windows 10 x64 90 Tournament games , GUI- Arena 3.5.1 ,  161.651 JCER games - until 31.12.2016   64.860 JCER games (from 01.01.2017)  JCER League Book: Perfect 2017 ,     Games, engines, book - download     Table created - Scid vs PC All files (games, tables and engines) -  download from page

Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler) Rating JCER - 3388 Raubfisch ME262 GTZ16a1 - download All files (games, tables and engines) - download from page

Sf211217MZ - download All files (games, tables and engines) - download from page

Temp 3' + 3" Hardware: Intel Core i3-3217U CPU 3,9 GB Memory , Windows 10 x64 480 Tournament games , GUI- Arena 3.5.1 ,  161.651 JCER games ,  until 31.12.2016   64.860 JCER games (from 01.01.2017)  JCER League Book: Perfect 2017 ,   Table created - Scid vs PC All files (games, tables and engines) -  download from page

UCI chess engine: asmFish JCER Rating=3382 ⏭ asmFish 2017-12-20 - download All files (games, tables and engines) -  download from page

Sugar - UCI chess engine Author - Marco Zerbinati  JCER=3378 SugaR XPrO 211217 - download All files (games, tables and engines) - download from page

Raubfisch is an engine derived from Stockfish and Torpedo 1.1 XJR (private engine by Frank Karl Werner and Max Fehler) Rating JCER - 3388 Raubfisch X37a1 - download All files (games, tables and engines) - download from page

Jumbo - winboard chess engine  Important notes: The Win64 binary was built using CygWin GCC 5.4.0 and requires the following DLLs that are part of the CygWin installation: cyggcc_s-seh-1.dll cygstdc++-6.dll cygwin1.dll Rating JCER=2182 Author - Sven Schüle, Berlin (Germany) ⏯ Jumbo 0.5.27 - download All files (games, tables and engines) - download from page

Stockfish , chess engine UCI Rating JCER = 3389 🔬 Author: Joost VandeVondele  Timestamp: 1513611141  Allow for general transposition table sizes. (#1341)  For efficiency reasons current master only allows for transposition table sizes that are N = 2^k in size, the index computation can be done efficiently as (hash % N) can be written instead as (hash & 2^k - 1). On a typical computer (with 4, 8... etc Gb of RAM), this implies roughly half the RAM is left unused in analysis.  Recently a neat trick was proposed to map a hash into the range [0,N[ more efficiently than (hash % N) for general N, nearly as efficiently as (hash % 2^k):  namely computing (hash * N / 2^32) for 32 bit hashes. This patch implements this trick and now allows for general hash sizes. Note that for N = 2^k this just amounts to using a different subset of bits from the hash. Master will use the lower k bits, this trick will use the upper k bits (of the 32 bit hash).  ...

Tordenskiold - java UCI chess engine author: Jonas Praem  Tordenskiold - download All files (games, tables and engines) - download from page

Snowy - UCI chess engine Author -  Jason Creighton Snowy - download All files (games, tables and engines) - download from page

Tiny Chess - UCI chess engine Author - Kelvin Yang  Rating JCER=1976 Homepage About Tiny Chess is an original UCI-compatible chess engine written in the C++11 programming language. The engine observes all rules of chess, including castling, en passant, draw by threefold repetition, etc. Tiny Chess 1.4.6 - download All files (games, tables and engines) - download from page

Stockfish , chess engine UCI Rating JCER = 3389 🔬 Author: Günther Demetz Timestamp: 1513611027  Enhanced verify search (#1338)  by disabling null-move-pruning for the side to move for first part of  the remaining search tree. This helps to better recognize zugzwang.  STC:  LLR: 2.96 (-2.94,2.94) [-3.00,1.00]  Total: 18220 W: 3379 L: 3253 D: 11588  LTC:  LLR: 2.96 (-2.94,2.94) [-3.00,1.00]  Total: 41899 W: 5359 L: 5265 D: 31275  bench: 5776193 ⭐⭐⭐    Stockfish 17121816 - download

BrainFish - UCI chess engine CEDR Rating=3378 Information from the author: Brainfish is a standard Stockfish chess engine extended by a general book format that is capable of handling a reduced part of Cerebellum, which is an innovative chess opening and playing book. In Brainfish, the book moves are only used in engine games, not in analysis mode. All moves in the published book Cerebellum_light.bin generated by Cerebellum were calculated by using Stockfish as analysis engine, without using statistics. Then those moves where recalulated by the Cerebellum Library using a graph algorithm that makes all scores in the library consistant. Consistant scores means for example, in case the starting position has a score of 0.2 and a best move is 1.e4, the position after 1.e4 must have the score -0.2. Additionally, some others properties are found, like the best main line of a position and possible Transitions. Hence, when Brainfish is playing moves that are in the Cerebellum book, it...

ChessBrainVB -  winboard chess engine Rating JCER=2840 Author - Roger Zuehlsdorf   ChessBrainVB 3.60 - download

Stockfish , chess engine UCI Rating JCER = 3389 🔬 Author: Gontran Lemaire  Timestamp: 1513498817  Remove QueenMinorsImbalance array #1340  Remove QMI array and adjust bishop, knight and queen coefficients  in QuadraticOurs and QuadraticTheirs arrays in compensation of  this removal.  STC :  LLR: 2.96 (-2.94,2.94) [-3.00,1.00]  Total: 49659 W: 9029 L: 8957 D: 31673  LTC :  LLR: 2.96 (-2.94,2.94) [-3.00,1.00]  Total: 45905 W: 5834 L: 5745 D: 34326  Bench: 5176807  ⭐⭐⭐    Stockfish 17121709_Lemaire - download