**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**

ALChess 1.5b -> 34

Adamant 1.7 -> 34

Aldebaran 0.7.0 -> 34

Alex 2.14a 64-bit -> 64

Alfil 12 MT -> 32

Amy 0.8.7b DC -> 32

Amyan 1.72 -> 64

AnMon 5.75 -> 32

Ares 1.004 -> 62

Arion 1.7 -> 61

Atak 6.8 -> 32

Atlas 3.14b 64-bit -> 32

Averno 0.81 -> 32

Belzebub 0.67 -> 34

Beowulf 2.4a 32-bit -> 32

Bobcat 3.25 64-bit -> 64

Booot 5.1.0 -> 32

Capivara LK0.08a11 64-bit -> 32

Chess Tiger 2007.1 -> 64

ChessterfieldCL i5a -> 541

Chezzz 1.0.3 -> 64

Chiron 1.1a 64-bit -> 32

Chronos 1.9.9 64-bit -> 32

Colossus 2008b -> 32

Comet B50 -> 28

Crafty 23.4 64-bit -> 32

Crazy Bishop 0052 -> 32

Critter 1.4 64-bit -> 32

Critter 1.6a 64-bit 4CPU -> 315

DanaSah 4.24 -> 32

Daydreamer 1.75 64-bit -> 29

Deep Junior 13 64-bit -> 32

Deep Shredder 12 64-bit OA On 1CPU -> 32

Deep Sjeng WC2008 64-bit 1CPU -> 32

Delfi 5.4 -> 32

Der Bringer 1.9 -> 32

Djinn 0.925x -> 32

Dragon 4.6 -> 32

E.T. Chess 13.01.08 -> 32

EXchess 6.02b 64-bit -> 64

EXchess 6.50b 64-bit -> 576

Elf 1.3.0 -> 34

EveAnn 1.67 -> 16

Exacto 0.d -> 32

Francesca MAD 0.19 -> 32

Frenzee 3.5.19 64-bit -> 32

Fritz 13 -> 32

GNU Chess 5.07.173b 64-bit -> 32

Gandalf 6 -> 32

GarboChess 2.10 64-bit -> 64

Gibbon 2.57a 64-bit -> 32

Glass 1.9 64-bit -> 64

Godel 2.0.5 64-bit -> 32

Gosu 0.16 -> 31

GreKo 8.2 64-bit -> 31

Gull 1.2 64-bit -> 32

Hamsters 0.7.1 -> 32

Hannibal 1.2 64-bit -> 32

Hermann 2.8 64-bit -> 64

Hiarcs 14 -> 768

Horizon 4.4 -> 64

Houdini 2.0c 64-bit 4CPU -> 189

IQ23.003 -> 34

KnightX 1.92 -> 32

Komodo 5 64-bit -> 190

Ktulu 9.0 -> 32

Laurifer 1.0 -> 34

Little Goliath Evolution 3.12 -> 32

Loop 13.6 (Loop 2007) 64-bit -> 32

Mediocre 0.5 -> 655

MiniMardi 1.3 -> 34

MinkoChess 1.2 64-bit -> 32

Mizar 3.0 -> 34

NanoSzachy 4.0 64-bit -> 32

Naum 4.2 64-bit -> 32

Needle 0.531 -> 34

Nemo 1.0.1b 64-bit -> 32

Onno 1.2.70 64-bit -> 32

Patzer 3.80 -> 31

Pepito 1.59.2 64-bit -> 31

Petir 4.999999 -> 64

Phalanx XXIII -> 32

Piranha 0.5 -> 34

Plisk 0.2.7d 64-bit -> 56

PostModernist 1016 -> 32

Protector 1.4.0 64-bit -> 32

Quazar 0.4 64-bit -> 32

Queen 4.03 -> 64

Rainman 0.7.5 -> 33

Rodin 5.1 -> 477

RomiChess P3L 64-bit -> 30

Rotor 0.7a -> 317

Ruffian 2.1.0 -> 32

Rybka 4.1 64-bit -> 32

Rybka 4.1 64-bit 4CPU -> 146

SEE 0.6.9 -> 34

Sage 3.53 -> 64

Shallow 1.0 64-bit -> 32

Simplex 0.9.8 64-bit -> 32

Sloppy 0.2.2 64-bit -> 32

Slow Chess Blitz WV2.1 -> 32

SmarThink 1.20 64-bit -> 32

Spark 1.0 64-bit -> 32

Spike 1.4 Leiden -> 32

Stockfish 2.2.2 64-bit -> 32

Stockfish 2.3.1 64-bit 4CPU -> 290

Storm 0.6 -> 34

Strelka 5.1 64-bit -> 32

Sungorus 1.4 64-bit -> 32

TJchess 1.1 64-bit -> 716

Terra 3.4 -> 64

Texel 1.01 64-bit -> 32

The Baron 2.23 64-bit -> 64

Thinker 5.4d Inert 64-bit -> 32

Ufim 8.02 -> 31

Uralochka 1.1b -> 32

Zappa Mexico II 64-bit -> 32

Zotron 4.4.6 -> 34