**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 updated separately to each other. The 40/40 and 40/4 lists are updated once every two weeks and alternately to each other. The FRC list is 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, by month or by ECO code. The download databases by month or ECO code are only updated monthly, but 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.

**Games submitted for this update**

Bouquet 1.6 32-bit -> 260

Gull II 32-bit -> 190

Sting SF 2 32-bit -> 181

Bouquet 1.6 64-bit -> 180

Chiron 1.5 64-bit -> 173

Stockfish 2.3.1 64-bit -> 164

DeepSaros 3.0 32-bit -> 161

RobboLito 0.21Q 64-bit -> 142

Naum 4.2 64-bit -> 119

Gull II b2 64-bit -> 102

Glass 1.9 64-bit -> 84

Sting SF 2 64-bit -> 84

Bouquet 1.5 64-bit -> 79

Strelka 5.5 64-bit -> 74

Critter 1.6a 64-bit -> 70

Spike 1.4 Leiden -> 68

IvanHoe 9.46h 64-bit -> 68

Gull II 64-bit -> 64

Godel 2.3.7 64-bit -> 63

Philou 3.7.1 64-bit -> 63

Deuterium 12.01.30.1070 64-bit -> 62

Hannibal 1.3 64-bit -> 58

BlackMamba 1.2b 64-bit -> 57

Rodent 0.16 64-bit -> 56

RedQueen 1.1.1 64-bit -> 54

GarboChess 3.0 64-bit -> 52

Rotor 0.7a -> 52

Pseudo 0.7c -> 51

Brutus 8.05 64-bit -> 51

Sloppy 0.2.3 64-bit -> 51

Amyan 1.72 -> 51

Chessmaster 11 -> 50

Cheng3 1.07 64-bit -> 49

Komodo 5 64-bit -> 44

Rybka 4.1 64-bit -> 44

Chiron 1.5 32-bit -> 41

Vitruvius 1.11C 64-bit -> 40

The Baron 2.23 64-bit -> 40

Hiarcs 14 -> 40

DeepSaros 3.3b 64-bit -> 39

IvanHoe 9.46h 32-bit -> 38

Stockfish 2.3.1 32-bit -> 38

Critter 1.6a 64-bit 4CPU -> 36

Naum 4.2 64-bit 4CPU -> 36

Francesca MAD 0.19 -> 36

Tucano 1.04 -> 36

Rybka 4.1 64-bit 4CPU -> 36

Shredder 12 32-bit OA On -> 36

Sting SF 2 64-bit 4CPU -> 36

Rybka 2.3.2a 32-bit -> 36

Stockfish 2.3.1 64-bit 4CPU -> 36

Houdini 3 64-bit 4CPU -> 36

Rodin 5.1 -> 36

MinkoChess 1.3 64-bit -> 35

Bouquet 1.6 64-bit 4CPU -> 35

Crafty 23.5 64-bit -> 35

Equinox 1.65 64-bit 4CPU -> 35

Hiarcs 14 4CPU -> 35

IvanHoe 9.46h 64-bit 4CPU -> 35

Texel 1.01 64-bit -> 35

RobboLito 0.21Q 64-bit 4CPU -> 35

Vitruvius 1.11C 64-bit 4CPU -> 35

Frenzee 3.5.19 64-bit -> 35

Tornado 4.88 64-bit -> 35

Houdini 1.5a 32-bit -> 34

Scorpio 2.7.5 64-bit -> 33

Komodo 3 32-bit -> 33

Nemo 1.0.1 64-bit -> 33

Atlas 3.25 64-bit -> 32

Rodent 0.15 64-bit -> 32

Godel 2.05 64-bit -> 32

Hannibal 1.2 32-bit -> 32

Arasan 12.0 64-bit -> 32

Bobcat 3.25 64-bit -> 31

BugChess2 1.9 64-bit -> 31

Naraku 1.4 -> 31

Quazar 0.4 64-bit -> 31

Toga Returns 1.1 -> 31

EXchess 6.71b 64-bit -> 31

Strelka 5.5 32-bit -> 28

Komodo 5 32-bit -> 28

Naum 4.2 32-bit -> 28

Rybka 4.1 32-bit -> 28

Houdini 3 32-bit -> 28

Vitruvius 1.11C 32-bit -> 28

Deep Junior 13.3 32-bit 1CPU -> 26

Shredder 12 32-bit OA Off -> 26

MinkoChess 1.3 64-bit 4CPU -> 24

Gaviota 0.85.1 64-bit 4CPU -> 24

Tornado 4.88 64-bit 4CPU -> 24

Bright 0.5c 4CPU -> 24

Arasan 15.1 64-bit 4CPU -> 23

Jonny 4.00 4CPU -> 23

Spike 1.4 Leiden 4CPU -> 23

Stockfish 2.2.2 32-bit -> 23

Toga Returns 1.1 4CPU -> 23

Scorpio 2.7.5 64-bit 4CPU -> 23

BugChess2 1.9 64-bit 4CPU -> 23

Hannibal 1.3 64-bit 4CPU -> 23

Gull II 64-bit 4CPU -> 23

Chiron 1.5 64-bit 4CPU -> 23

Crafty 23.4 64-bit 4CPU -> 23

Critter 1.4 32-bit -> 23

Protector 1.4.0 64-bit 4CPU -> 23

Deep Junior 13.3 64-bit 4CPU -> 23

Deep Sjeng c't 2010 -> 20

Quazar 0.4 32-bit -> 18

Dirty 5Sep2012 64-bit -> 17

Arasan 15.1 64-bit -> 17

Strelka 5.1 32-bit -> 16

DiscoCheck 3.7.1 64-bit -> 15

Critter 1.6a 32-bit -> 14

Octochess r4741 64-bit -> 12

Gaviota 0.85.1 64-bit -> 12

RedQueen 1.1.2 64-bit -> 12

Alfil 13 64-bit -> 12

ProDeo 1.83c -> 12

DeepSaros 3.1a 64-bit -> 8

Hannibal 1.3 32-bit -> 6

DeepSaros 2.3j 32-bit -> 6

Mediocre 0.5 -> 4

Pupsi2 0.09 -> 4

Bison 9.11 64-bit -> 4

Booot 5.1.0 -> 4

Delphil 2.9g 64-bit -> 4

Chesley r323 -> 4

Atak 6.8 -> 4

Beowulf 2.4a 64-bit -> 4

Thinker 5.4D Inert 64-bit -> 4

Tigran 2.3 64-bit -> 4

Shallow 1.0 64-bit -> 4

Bagatur 1.3a 64-bit -> 4

Slow Chess Blitz WV2.1 -> 4

Betsabe II 1.28 64-bit -> 4

Ifrit m1.8 64-bit -> 4

Pawny 0.3.1 64-bit -> 4

DanaSah 5.00 -> 4

GreKo 9.7 64-bit -> 4

Vajolet 1.62.1 -> 4

Zeus 1.29 -> 4

Myrddin 0.86 64-bit -> 4

Djinn 0.971 64-bit -> 4

ChessKiss 1.7 64-bit -> 4

Hannibal 1.2 64-bit -> 2

Gibbon 2.57a 64-bit -> 2

iCE 0.3 -> 2

LittleThought 1.052 64-bit -> 2

Houdini 3 64-bit -> 2

Capivara LK 0.08b03a 64-bit -> 2

Adam 3.3 -> 2

Deep Junior 13.3 64-bit 1CPU -> 2

Natwarlal 0.14 -> 2

Shredder 12 64-bit OA On -> 2