CCRL 40/4
Downloads and Statistics
October 14, 2017
Testing summary:
Total: 1'547'715 games
played by 1'819 programs
20721 CPU days (X2 4600+)

White wins: 605'685 (39.1%)
Black wins: 494'067 (31.9%)
Draws: 447'963 (28.9%)
White score: 53.6%

Thanks

Contributors

Following people submitted games to CCRL 40/4 database: Gabor Szots, Adam Hair, Shaun Brewer, Kirill Kryukov, Sergio Martinez, Ray Banks, Graham Banks, Denis Mendoza, Chuck Wilson, Aser Huerga, Brent Magnusson, Cody Rowland, Dom Leste, Volker Pittlik, Tom Logan, Martin Thoresen, Nathan Russell, Chris Taylor, Charles Smith.

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

Shaun Brewer, 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, Arturo Ochoa, Jeroen Noomen, 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: Mikko Aarnos, Enrique Sanchez Acosta, Adam Adair, Mike Adams, Thomas Adolph, Mark Ainsworth, Richard Allbert, Peter Alloysius, Rasmus Althoff, Juan Pablo Fernandez Alvarez, Leen Ammeraal, Jeffrey An, Michael An, Binesh Andrews, Volker Annus, Volker Annuss, Benny Antonsson, Daniel Anulliero, Edsel Apostol, Stan Arts, Luis Babboni, Ivan Bacigal, Aaron Baird, Miguel Ballicora, Amir Ban, Ankan Banerjee, Christian Barreteau, Steffen Basting, Max Bauer, Aaron Becker, Alvaro Begue, Marco Belli, Abel Belzunces, Ruben Carlo Benante, Ryan Benitez, Casper W. Berg, Michel Van den Bergh, Albert Bertilsson, Rea Biagio, Johnny Bigert, Aart Bik, Yves De Billoez, Markus Binder, Jeff Bishop, Norman Blais, Normand Blais, Uri Blass, Erdi Ata Bleda, Fonzy Bluemers, Alex Boby, Volker Bohm, Terry Bolt, Ivan Bonkin, Michael Borgstadt, Martin Borriss, Borko Boskovic, Jean Bouchet, Xavier Bouchet, Christopher Bowron, Ross Boyd, Dan Ravensloft, formerly Matthew Brades, Lucas Braesch, Oliver Brausch, Dennis Breuker, Miles Bright, Sander Maassen vd Brink, Jan Brouwer, Alex Brunetti, Martin Bryant, Dieter Buerssner, Stefan de Buhr, Romain Burgot, Shay Bushinsky, Vadim Bykov, Carlos del Cacho, Carmelo Calzerano, Giuseppe Cannella, Guillermo Carvalho, Pedro Castro, Fabio Cavicchio, Can Cetin, Ma Chao, Manik Charan, Shawn Chidester, Vadim Chizhov, Piotr Cichy, Gianluca Cisana, Philipp Classen, Federico Corigliano, Federico Andres Corigliano, Pedro Mourao Correia, Sandro Corsini, Claudio Della Corte, Marco Costalba, David Cotton, Remi Coulom, Anthony Cozzie, Stuart Cracraft, Don Cross, Loic Cuenot, Nicolai Czempin, Pawel Czerminski, Piotr Dachtera, David Dahlem, Don Dailey, Christian Daley, Tijs van Dam, Alessandro Damiani, Martin Danielsson, Jon Dart, Ben Dean-Kawamura, Richard Delorme, Vadim Demichev, Emilio Diaz, Manuel Diaz, Antonio Dieguez, Andreas Dirks, Dusan Dobes, Mike Dokken, Chrilly Donninger, Luca Dormio, Christophe Drieu, Alejandro Dubrovsky, Patrice Duhamel, Michael Dvorkin, Johan Dykstrom, Hrafn Eiriksson, Dogac Eldenk, Anton Emelyanov, Sean Empey, Garcinuno Enriquez, Philippe Fabiani, Andrew Fan, Ubaldo Farina, Ubaldo Andrea Farina, Peter Fendrich, Helmut Fett, Martin Fierz, Guillermo Filia, Sune Fischer, Tim Foden, Chris Formula, Bill Forster, Josue Forte, Andrei Fortuna, Marty Franz, Dr Colin Frayn, Klaus Friedel, Jean-Christophe Gabillard, Philippe Gailhac, Thomas Gaksch, Jose Carlos Martinez Galan, Marcin Gardyjan, Dr. Onno Garms, Scott Gasch, Andrea Gatti, Oscar Gavira, Jean-Francois Gazet, Stefano Gemma, Matthias Gemuh, Mincho Georgiev, George Georgopoulos, Lukas Geyer, Salvatore Giannotti, Martin Giepmans, Matthew Gingell, Marco Giusfredi, Evert Glebbeck, Fabio Gobbato, F. Javier Salido Gomez, Julien Goncalves, Romain Goussault, Andrew Grant, Fritz Grau, Thorsten Greiner, Conor Griffin, Darragh Griffin, Andrea Griffini, Neels Groenewald, Raphael Grundrich, Denis Gruzdev, Christian Guenther, Alex Guerrero, Gabriel Guillory, Oscar Toledo Gutierrez, Jacob Hales, Arnaud Halle, Sam Hamilton, Bas Hamstra, Aloysius Han, Gunnar Harms, Roman Hartmann, Tony Hecker, Navid Hedjazian, Raimund Heid, Luca Hemmerich, Andreas Herrmann, Folkert van Heusden, Michael Hoffmann, Martin Holder, Dan Homan, Dan Honeycutt, Peter Horvath, Robert Houdart, Rudolf Huber, Shane Hudson, Marc-Philippe Huget, Peter Hughes, Juri Huikari, Dylan Hunn, Johan Hutting, Nguyen Viet Huy, Robert Hyatt, Alessandro Iavicoli, Werner Inmann, Nicu Ionita, Giuliano Ippoliti, Hironori Ishibashi, Miguel Izquierdo, Aleksandar Jaksic, Colin Jenkins, Peter Jennings, Harald Johnsen, Christophe Jolly, Wander A. Ferreira Jr, Ben-Hur Carlos Langoni Junior, Radoslaw Kamowski, Pradu Kannan, Francois Karr, Jean-Philippe Karr, Dominik Kaser, Larry Kaufman, Mohammad Kayali, Tom Kerrigan, Marcel van Kervinck, Niyaz Khasanov, Joona Kiiski, Dave King, Patrick M. King, Tom King, Jan Klima, Chad Koch, Janne Kokkala, Marek Kolacz, Thomas Kolarik, Chua Kong-Sian, Johan de Koning, Roman Korba, Alexey Korneychuk, Evgeniy Korniloff, Igor Korshunov, Tim Kosse, Pawel Koziol, Hans-Joachim Kraas, Jonathan Kreuzer, Adam Kujawski, Nikita Kurgin, Tamas Kuzmics, Sylvain Lacombe, Sylvain Ladoux, Matthew Lai, Jean-Yves Lallemand, Eypun Lamhauge, Andrea Lanza, Dominic Lattanzi, Tor Lattimore, Michael Lawatsch, Greg Lazarou, Mike Leany, Mark Lefler, Yves Lejeail, Fabien Letouzey, Zong Zheng Li, Tom Likens, Jose Andres Morales Linares, Jacob Bors Lind, Anton Lindenmair, Dr.Jay Lindgren, Gary Linscott, Luca Lissandrello, Alex Lobanov, James F. Long, Dominique Longbien, Ulf Lorenz, Stephen Lovell, Robert Lubczynski, Bruno Lucas, Harald Luessen, Stef Luijten, George Lyapko, Erik Madsen, Ivan Maklyakov, Odd Gunnar Malin, Edoardo Manino, Andres Manzanares, Andrea Manzo, Eric Marathee, Julien Marcel, Dominic C Marcello, Giovanni Di Maria, Sergei Markoff, John Marountas, Mariusz Marszalkowski, Gianluigi Masciulli, Youri Matiounine, Srdja Matovic, Steve Maughan, Mike Maxim, Anton Maydell, Thomas Mayer, Jonas Mayr, Mauro Mazzieri, Kris McAulay, Thomas McBurney, Peter McKenzie, Matt McKnight, Vladimir Medvedev, Daniel Mehrmann, Johan Melin, Maxim Melnikov, Marco Meloni, John Merlino, Sergey Meus, Stefan Meyer-Kahlen, Tomasz Michniewski, Helge Milde, Anastasios Milikas, Tony Mokonen, Maurizio Monge, Dave Moore, Bruce Moreland, Chris Moreton, Manlio Morini, Alex Morozov, Dmitry Morozov, Ferdinand Mosca, Edmund Moshamer, Alexandru Mosoi, William Mota, H.G. Muller, Harm Geert Muller, Mathias Muller, Steve Mulligan, Roberto Munter, Ron Murawski, Luca Naddei, Aleksandar Naumov, Pallav Nawani, Sergei Nefedov, Rian Neogi, Pham Hong Nguyen, Jaco van Niekerk, Eypun Nielsen, Jens Baek Nielsen, Jesper Nielsen, Walter van Niftrik, Torbjorn Nilsson, Phokham Nonava, Bernd Nuernberge, Mikko Nummelin, Adam Oellermann, Eric Oldre, Lourenco Oliveira, Vincent Ollivier, Jury Osipov, Peter Osterlund, Jori Ostrovskij, Felipe Otaviano, Mathieu Page, Jeremy Pages, Marco Pagnoncelli, Rahman Paidar, Salvador Pallares, Marco Pampaloni, Evgeni Pandurski, Gian-Carlo Pascutto, Arkadiusz Paterek, Valeriy Pererodov, Cesar Rodolfo Contreras Perez, Lance Perkins, Maciej Pestka, Jonatan Pettersson, Thomas Petzke, Jochen Peussner, Roland Pfister, Christos Philippou, Ilari Pihlajisto, Richard Pijl, Mateusz Luksik, Poland, Robert Pope, Rudolf Posch, Shaun Press, Marcus Prewarski, Clemens Pruell, Kamil Przybyla, Daniel Jose Queralto, David Rabel, Landon W. Rabern, Vasik Rajlich, Chan Rasjid, David Rasmussen, Adrien Regimbald, Sylvain Renard, Gerrit Reubold, Fritz Reul, Stuart Riffle, Luigi Ripamonti, Nicola Rizzuti, Charles Roberson, Joey Robert, Nicolas Robert, Erik Robertsson, Jean-Francois Romang, Tord Romstad, Toma Roncevic, Peter Rosendahl, Benjamin Rosseaux, Holger Ruckdeschel, Jaime Benito de Valle Ruiz, Rhys Rustad-Elliott, David Safranek, Severi Salminen, Maurizio Sambati, Juan Benitez Sanchez, Jakob Sandholm, Alberto Sanjuan, Aleksandrs Saveljevs, Mauro Scarpa, Dennis Sceviour, Ralf Schaefer, Ralf Schafer, Frank Scharn, Reinhard Scharnagl, Francois Scheurer, Norman Schmidt, Frank Schneider, Ed Schroder, Gunther Schrufer, Sven Schuele, Sven Schule, Alcides Schulz, Alessandro Scotti, Lawrence Sebald, Martin Sedlak, Antonio Senatore, Fermin Serrano, Daniel Shawul, John Shedletsky, Michael Sherwin, Evgeny Shtranvasser, Grzegorz Sidorowicz, Allard Siemelink, Evgeniy Silchenko, Will Singleton, Kai Skibbe, Per Skjerpe, Samuel Slutzky, Oleg Smirnov, Tony Soares, Christian Soderstrom, Bluefever Software, Christian Sommerfeld, Daniel Sparks, Vlad Stamate, John Stanback, Valentin Stanciu, James Stanley, Lorenzo Stella, Eric Stock, Marek Strejczek, Roland Stuckardt, Johanes Suhardjo, Steen Suurballe, James Swafford, Antoni Szczepanski, Omid David Tabibi, Werner Taelemans, Chris Tatham, Robert Taylor, Franck Tempet, Christophe Theron, Nathan Thom, Krasimir Topchiyski, Antonio Torrecillas, Eric Triki, Alexander Turikov, Ulrich Turke, Mark Uniacke, Daniel Uranga, Paul Villanueva Urquijo, Engin Ustun, Oliver Uwira, Per-Ola Valfridsson, Andres Valverde, George Varentsov, Vigi Varkey, Vaclav Vavra, Juan Manuel Vazquez, Pablo Vazquez, Jose M Velasco, Nicolas Velin, Pietro Velocchi, Koundinya Veluri, Joel Veness, Stephan Vermeire, Jyrki Vesterinen, Richard Vida, Tom Vijlbrief, Martin Villwock, Luigino Viscione, Frederik Wass, Simon Waters, Zach Wegner, David Weller, Daniel White, Gijsbert Wiesenekker, Andrew Williams, Laurens Winkelhagen, Dan Wulff, Dave Wyatt, Kelvin Yang, Ales Zamuda, Dragan Zdravkovic, Franck Zibi, Georg v. Zimmermann, Stefan Zipproth, Roger Zuehlsdorf, Johannes Zwanzger, Berlin Technical University faculty members, Rajiv Bakulesh Shah & team.

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 2005-2013 by CCRL team
Last games added on October 14, 2017