The latest CCRL Rating Lists and Statistics are available for viewing from the following links:
http://computerchess.org.uk/ccrl/4040/ (40/40)
http://www.computerchess.org.uk/ccrl/404/ (40/4)
http://www.computerchess.org.uk/ccrl/404FRC/ (FRC 40/4)

Please note that the three lists are often updated separately to each other. The FRC list is only updated when a new engine or engine version is being/has been tested.

The links to the various rating lists can be found just beneath the default Best Versions list (as in this screenshot). Specific 32-bit rating lists are denoted as such to the right of the default list in each category. The default lists contain the 64-bit engines.



Our 40 moves in 40 minutes repeating and 40 moves in 4 minutes repeating are both adjusted to the AMD64 X2 4600+ (2.4GHz).

Be aware that in the early stages of testing, an engine's rating can often fluctuate a lot.
It is strongly advised to look at the many other rating lists available in order to get a more accurate overall picture of an engine's rating relative to others.

The LOS (likelihood of superiority) stats to the right hand side of each rating list tell you the likelihood in percentage terms of each engine being superior to the engine directly below them.

All games are available for download by engine or ECO code. The total games database in its entirety is always available.
The current ELO ratings are saved in all game databases for those engines that have 200 games or more.

Clicking on an engine name will give details as to opponents played plus homepage links where applicable.

Custom lists of engines can be selected for comparison.

An openings report page lists the number of games played by ECO codes with draw percentage and White win percentage. Clicking on a column heading will sort the list by that column.


40/40 Gauntlets and Tournaments currently running or starting soon
Crafty 23.8 64-bit 4CPU
Sting SF 4 64-bit 4CPU
Gull 2.8b 64-bit 4CPU
Super Tournament XIX 4CPU
Houdini 4 Tactical 64-bit
Rhetoric 1.2 64-bit
Godel 3.4.9 64-bit
Andscacs 0.62u 64-bit
BlackMamba 2.0 64-bit
Nirvanachess 1.5 64-bit
Gaviota 1.0 64-bit 64-bit
The Absolution (1CPU tournament)
Outstretched Claws (1CPU tournament)
45th Amateur Series Division 5
Arminius 2014-01-18 64-bit(on the waiting list)
FireFly 2.7.0 64-bit (on the waiting list)
ProDeo 1.88 (on the waiting list)


40/4 Gauntlets currently running or starting soon
Rhetoric 1.2 64-bit
Cheng4 0.36c 64-bit
K2 0.43f
ProDeo 1.87
Rodent 1.3 64-bit
Deuterium 14.1.32.119 64-bit
Greko 10.3 64-bit
Djinn 1.010 64-bit
Arminius 2014-01-18 64-bit
DiscoCheck 5.2 64-bit
Braincrack alpha
Suff 0.3a
Sunfish
Stockfish DD 64-bit
Pupsi2 0.09