Downloads and Statistics
July 6, 2019
Testing summary:
Total: 245'622 games
played by 197 programs
2286 CPU days (X2 4600+)

White wins: 100'976 (41.1%)
Black wins: 87'680 (35.7%)
Draws: 56'966 (23.2%)
White score: 52.7%


Hardware Assistance

We would like to thank Anton Mihailov at Chessdom for giving us the use of a dual Xeon server to help us with our testing. Chessdom also provide us with an excellent web-hosting solution via


Following people submitted games to CCRL 404FRC database: Ray Banks.

Kirill Kryukov and Shaun Brewer automated statistical analysis and designed the web-site, with lot of useful feedback from other team members.

Ray Banks and Kirill Kryukov maintained the game database and published updates.

Authors of chess software we used

We want to thank Martin Blume for creating Arena - a great free chess interface. We also want to thank Matthias Gemuh for creating ChessGUI - another great free chess interface. We also used commercial interfaces: Chessbase interfaces, Shredder GUI by Stefan Mayer-Kahlen and Engine Research Tool by Lokasoft.

Odd Gunnar Malin made very useful adapters Wb2Uci and InBetween.

Eugene Nalimov and Andrew Kadatch created "Nalimov Tablebases". Daniel Shawul created Scorpio bitbases. Miguel Ballicora created Gaviota tablebases. We also thank members of EGTB Online project for making those endgame tablebases freely available online.

We are grateful to Harry Schnapp, Sedat Canbaz, Wael Deeb, Christopher Conkie, Mike Scheidl for creating high quality opening books we used in testing.

Most of all we would like to thank developers of all the chess engines we tested: Enrique Sanchez Acosta, Volker Annus, Volker Annuss, Aaron Becker, Michel Van den Bergh, Uri Blass, Volker Bohm, Lucas Braesch, Pedro Castro, Manik Charan, Federico Corigliano, Marco Costalba, Stuart Cracraft, Don Dailey, Vadim Demichev, Antonio Dieguez, Patrice Duhamel, Ubaldo Andrea Farina, Sune Fischer, Thomas Gaksch, Lukas Geyer, Fabio Gobbato, Christian Guenther, Gunnar Harms, Tony Hecker, Daniel C Homan, Peter Horvath, Robert Houdart, Larry Kaufman, Niyaz Khasanov, Joona Kiiski, Tim Kosse, Mark Lefler, Fabien Letouzey, Edoardo Manino, Gemuh M. Matthias, Steve Maughan, Jonas Mayr, Daniel Mehrmann, Stefan Meyer-Kahlen, Anastasios Milikas, Aleksandar Naumov, Gian-Carlo Pascutto, Roland Pfister, Richard Pijl, Teemu Pudas, Landon W. Rabern, Vasik Rajlich, Fritz Reul, Tord Romstad, Alberto Alonso Ruibal, Jaime Benito de Valle Ruiz, Ralf Schafer, Norman Schmidt, Alessandro Scotti, Martin Sedlak, Chua Kong Sian, Allard Siemelink, Christian Sommerfeld, Mark Uniacke, Engin Ustun, Richard Vida, Simon Waters, Daniel White, Franck Zibi, Johannes Zwanzger.

Software we used for database management, statistics, game analysis, web-site publishing and communication

We want to thank Remi Coulom for creating a wonderful tool Bayeselo. We use it to compute our rating lists, LOS figures and performances.

David J. Barnes created PGN Extract which we use to perform opening classification of our game database.

Our statistics and processing is automated using Perl language, particularly ActivePerl distribution.

We used following great software for file and database management:

Other incredibly useful free software we use every day:

Created in 2005-2008 by CCRL team
Last games added on July 6, 2019