**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**

Chiron 1.5 64-bit 4CPU -> 212

Gull R375 64-bit -> 165

Gull R375 64-bit 4CPU -> 139

Crafty 23.5 64-bit -> 124

Gaviota 0.86 64-bit -> 105

Deep Junior 13.3 64-bit 1CPU -> 99

Dabbaba 7.49 -> 97

Protector 1.5.0 64-bit -> 95

Hannibal 1.3 32-bit -> 87

Rotor 0.8 -> 86

DanaSah 5.00 -> 83

ProDeo 1.83c -> 79

BeRoChess 1.00 32-bit -> 76

Dirty 5Sep2012 64-bit -> 75

Cupcake 1.1a -> 75

Soldat III 0.172 -> 75

Rodin 5.1 -> 73

EXchess 6.71b 64-bit -> 72

BugChess2 1.9 64-bit -> 69

Toga Returns 1.1 -> 69

Cheng3 1.07 64-bit -> 61

Hannibal 1.3 64-bit -> 58

Warrior 1.0.3 -> 57

IvanHoe 9.46h 64-bit 4CPU -> 57

Protector 1.5.0 64-bit 4CPU -> 57

Protector 1.5.0 32-bit -> 57

GChess IV 0.2.0 -> 57

Sting SF 2 64-bit 4CPU -> 57

Jabba 13032012 -> 57

Ziggurat 0.18 64-bit -> 57

Reger 0.09 -> 57

MatMoi 7.15.0 -> 56

Bouquet 1.6 64-bit 4CPU -> 56

Atlas 3.25 64-bit -> 55

Critter 1.6a 64-bit 4CPU -> 55

RobboLito 0.21Q 64-bit 4CPU -> 55

Stockfish 2.3.1 64-bit 4CPU -> 53

Dabbaba 6.52 -> 50

NanoSzachy 4.0 64-bit -> 50

Alfil 13.1 64-bit -> 49

Tucano 1.04 -> 49

Strelka 5.5 64-bit -> 49

Arasan 12.0 64-bit -> 44

Glass 2.0 64-bit -> 43

Rodent 0.15 64-bit -> 43

Brutus 8.05 64-bit -> 43

Hannibal 1.3 64-bit 4CPU -> 43

Nemo 1.0.1 64-bit -> 43

Naum 1.91 64-bit -> 42

GarboChess 3.0 64-bit -> 42

Alfil 13.1 64-bit 4CPU -> 41

Delphil 2.9g 64-bit 4CPU -> 41

Pharaon 3.5.1 4CPU -> 41

RedQueen 1.1.3 64-bit 4CPU -> 41

Nebula 1.5 64-bit 4CPU -> 41

BugChess2 1.9 64-bit 4CPU -> 41

Jonny 4.00 4CPU -> 40

Octochess r4984 64-bit 4CPU -> 40

FireFly 2.6.0 64-bit 4CPU -> 40

Arasan 15.2 64-bit 4CPU -> 40

Stockfish 2.3.1 64-bit -> 40

Critter 1.6a 64-bit -> 40

Sting SF 2 64-bit -> 39

IvanHoe 9.46h 64-bit -> 38

Octochess r4984 64-bit -> 38

Glaurung 2.2 64-bit -> 36

Thinker 5.3b Passive 64-bit -> 36

Rodent 0.16 64-bit -> 36

DiscoCheck 3.7.1 64-bit -> 36

Arasan 15.1 64-bit -> 36

Komodo 5 64-bit -> 36

Scorpio 2.7 64-bit -> 36

Francesca MAD 0.19 -> 36

CM9000 Assassin -> 36

Dirty 23Mar2012 64-bit -> 36

Deuterium 12.01.30.1070 64-bit -> 36

GNU Chess 5.07.153b 64-bit -> 36

Spike 1.4 Leiden 4CPU -> 35

Godel 2.05 64-bit -> 35

BlackMamba 1.2c 64-bit -> 34

Scorpio 2.7.5 64-bit -> 33

Texel 1.01 64-bit -> 33

Frenzee 3.5.19 64-bit -> 33

Tornado 4.88 64-bit -> 33

Quazar 0.4 64-bit -> 32

EXchess 7.02b 64-bit -> 32

Pupsi2 0.09 -> 30

Pawny 0.3.1 64-bit -> 30

Vitruvius 1.11C 64-bit -> 26

Rybka 4.1 64-bit -> 26

Naum 4.2 64-bit -> 26

Vitruvius 1.11C 64-bit 4CPU -> 25

Hiarcs 14 4CPU -> 24

Rybka 4.1 64-bit 4CPU -> 24

Naum 4.2 64-bit 4CPU -> 23

RobboLito 0.21Q 64-bit -> 22

Bouquet 1.6 64-bit -> 22

Rybka 2.3.2a 64-bit 4CPU -> 21

Houdini 1.5a 64-bit 4CPU -> 21

Godel 2.3.7 64-bit -> 20

Philou 3.7.1 64-bit -> 20

Rodent 1.0 64-bit -> 19

ProDeo 1.85 -> 19

RedQueen 1.1.3 64-bit -> 19

Bobcat 3.25 64-bit -> 18

Arasan 15.2 64-bit -> 18

Gibbon 2.01b -> 18

DiscoCheck 4.1 64-bit -> 18

MinkoChess 1.3 64-bit -> 14

DeepSaros 3.3b 64-bit -> 14

Deep Junior 13.3 64-bit 4CPU -> 14

GreKo 10.0 64-bit -> 12

Djinn 0.979 64-bit -> 12

BSC 3.9++ 32-bit -> 10

Hiarcs 14 -> 10

Houdini 3 64-bit 4CPU -> 10

IvanHoe 9.46h 32-bit -> 8

Deep Junior 13.3 32-bit 1CPU -> 8

Cupcake 1.0 -> 8

Spike 1.4 Leiden -> 8

Quazar 0.4 32-bit -> 8

BlackMamba 1.2c 32-bit -> 8

Sting SF 2 32-bit -> 8

Komodo 3 32-bit -> 8

Alfil 12 -> 8

BlackMamba 1.2b 64-bit -> 8

Bison 9.6 -> 8

Rybka 2.3.2a 32-bit -> 8

Alaric 0702b -> 8

Shredder 12 32-bit OA Off -> 8

RomiChess P3L 64-bit -> 7

Sjakk 1.1.9 -> 7

Chess Tiger 2007 -> 7

Delphil 2.9g 64-bit -> 7

OliThink 5.3.2 64-bit -> 7

Nebula 1.5 64-bit -> 7

RobboLito 0.21Q 32-bit -> 7

Petir 4.999999 -> 7

Nebula 2.0 64-bit -> 7

Jazz 640 64-bit -> 7

Stockfish 2.3.1 32-bit -> 6

Quazar 0.3b 32-bit -> 6

Spike 1.2 Turin -> 6

Critter 1.6a 32-bit -> 6

AnMon 5.75 -> 6

Ktulu 8 -> 6

N2 0.4 64-bit -> 6

Sloppy 0.2.3 64-bit -> 6

CM10th Xperience -> 6

Houdini 3 32-bit -> 6

Scorpio 1.91 -> 6

SOS 5.1 -> 6

Shredder 12 32-bit OA On -> 6

DeepSaros 2.3j 32-bit -> 6

Gull II 64-bit -> 6

Tornado 2.2 -> 6

Ufim 8.02 -> 5

Trace 1.37a -> 5

Deep Sjeng c't 2010 -> 4

Houdini 1.5a 32-bit -> 3

Strelka 5.5 32-bit -> 2

Bouquet 1.5 32-bit -> 2

Stockfish 2.2.2 32-bit -> 2

Komodo 5 32-bit -> 2

Naum 4.2 32-bit -> 2

Rybka 4.1 32-bit -> 2

Vitruvius 1.11C 32-bit -> 2

Critter 1.4 32-bit -> 2

Chiron 1.5 32-bit -> 2