The latest CCRL update (16th May 2025)

[Graham Banks]

The latest CCRL Rating Lists and Statistics (16th May) are available for viewing from the following links:

www.computerchess.org.uk/ccrl/4040 (40/15 and 15m+10s)
www.computerchess.org.uk/ccrl/404 (BLITZ 2m+1s)
www.computerchess.org.uk/ccrl/402.archive/ (BLITZ 40/2 Archive)
www.computerchess.org.uk/ccrl/404FRC (FRC 40/2)
www.computerchess.org.uk/ccrl/Chess324/ (Chess324)

Our 40 moves in 15 minutes repeating (including 15 minutes with 10 second increments) and 2 minutes with 1 second increments are both adjusted to the Intel i7 4770k (3.5GHz) using the Stockfish 10 64-bit benchmark.
All of our current testing uses AVX2 compiles where available.

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 inclusion or exclusion of engines in our lists should not be taken as our group making a statement about their legality or status. Where there is controversy, it is usually mentioned in the engine notes.

Thanks to:
- Kirill Kryukov who wrote the scripts that produce all CCRL data, with recent processing speed-ups from Martin Sedlak (Cheng author).
- all of our currently active testers (Graham, Gabor, Basti, Shaun and Andres). We welcome Mattia Giambirtone as a new CCRL tester.
- Ray who ran the time-consuming weekly updates for a very long time, a task now shared among three testers.
- Jay Honnold for both the tournament viewer and for hosting Graham's live broadcasts.
- all engine authors. Without you, CCRL wouldn't exist.
- Anton Mihailov (Chessdom.com) for hosting our rating lists for many years.
- Sam Roelants (Simbelmyne author) who has taken over the hosting of our rating lists.

40/15 and 15m+10s testing this week will include (thanks to Graham, Andres and Shaun. Live broadcast given where applicable):

Live broadcasts of some Gauntlets can be made available upon request.
(Web based viewer courtesy of Jay Honnold, with additions by Lana (Princhess), Jost Triller (Nalwald) and Finn Eggers (Koivisto).

118th Amateur Series Division 1 (finishing Tuesday) Web based viewer http://ccrl.live/16065
118th Amateur Series Division 2 (finishing Thursday) Web based viewer http://ccrl.live/16067
118th Amateur Series Division 3 (continuing) Web based viewer http://ccrl.live/16071
118th Amateur Series Division 4 (starting Tuesday) Live broadcast link to be advised
118th Amateur Series Division 5 (starting Thursday) Live broadcast link to be advised
The Sentinel And The Outcast Tournament (continuing) Web based viewer http://ccrl.live/16070

Caissa 1.22 64-bit 4CPU Gauntlet (finishing Monday) Web based viewer http://ccrl.live/16061
Arasan 25.1 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16062
Wasp 7.0.0 64-bit 4CPU Gauntlet (finishing today) Web based viewer http://ccrl.live/16063
Horsie 1.1 64-bit 4CPU Gauntlet (starting Monday) Web based viewer http://ccrl.live/16061
Lizard 11.2 64-bit 4CPU Gauntlet (starting today) Web based viewer http://ccrl.live/16063

Horsie 1.1 64-bit Gauntlet (continuing)
Caissa 1.22 64-bit Gauntlet (continuing)
Lizard 11.2 64-bit Gauntlet (continuing)
Renegade 1.2.0 64-bit Gauntlet (finishing Tuesday)
Superultra 2.1 64-bit Gauntlet (finishing Wednesday)
Arasan 25.1 64-bit Gauntlet (starting Tuesday)
CS Tal 2.1 EAS 64-bit Gauntlet (starting Wednesday)

Various 1CPU and 4CPU Gauntlets being run by Andres, who is submitting 4-5 gauntlets each week.

2m+1s testing since the last update report has included (thanks to Gabor and Shaun):

Kobra 2.0 64-bit
Jacky Chess 25.04 64-bit
Dirty Catpaw 64-bit
Tarnished 1.0 Renown 64-bit
Arasan 25.1 64-bit
Caissa 1.22 64-bit
KnightX 4.4 64-bit
Bread 1.4.0 64-bit
pawn 4.0 64-bit
Qapla 0.3.1 64-bit
Renegade 1.2.0 64-bit
Caissa 1.22 64-bit 8CPU

FRC 40/2 testing since the last update report has included (thanks to Basti and Matt):

None this week. (Basti is a student and has computer issues. He is saving up some money to get his computer fixed)
Mattia Giambirtone is a new CCRL tester and he is intending to get this list updated in Basti's absence. He is currently setting everything up on his computer (using Linux).

Chess324 (thanks to Basti and Matt)

None this week. (Basti is a student and has computer issues. He is saving up some money to get his computer fixed)

Mattia Giambirtone is a new CCRL tester and he is intending to get this list updated in Basti's absence. He is currently setting everything up on his computer (using Linux).