The latest CCRL update (7th June 2025)

[Graham Banks]

The latest CCRL Rating Lists and Statistics (7th June) 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 7 (finishing today) Web based viewer http://ccrl.live/16064
118th Amateur Series Division 8 (finishing Monday) Web based viewer http://ccrl.live/16067
118th Amateur Series Division 9 (finishing Wednesday) Web based viewer http://ccrl.live/16065
118th Amateur Series Division 10 (starting today) Web based viewer http://ccrl.live/16070
118th Amateur Series Division 11 (starting Monday) Broadcast link to be advised
118th Amateur Series Division 12 (starting Wednesday) Broadcast link to be advised
Revving Up And Going Berserk Tournament (finishing Thursday) Web based viewer http://ccrl.live/16072
New Tournament (starting Thursday) Broadcast link to be advised

Quanticade Orion 2.0 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16061
Obsidian 16.0 64-bit 4CPU Gauntlet (finishing Tuesday) Web based viewer http://ccrl.live/16062
Fritz 20 64-bit 4CPU Gauntlet (finishing Thursday) Web based viewer http://ccrl.live/16063
PlentyChess 6.0.0 64-bit 4CPU Gauntlet (starting Tuesday) Web based viewer http://ccrl.live/16062
Renegade 1.2.0 64-bit 4CPU Gauntlet (starting Thursday) Web based viewer http://ccrl.live/16063

Quanticade Orion 2.0 64-bit Gauntlet (continuing)
Obsidian 16.0 64-bit Gauntlet (continuing)
Fritz 20 64-bit Gauntlet (continuing)
Motor 0.9.0 64-bit Gauntlet (starting Sunday)
PlentyChess 6.0.0 64-bit Gauntlet (starting Tuesday)

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):

Byte-knight 3.0.0 64-bit
Admete 1.7.0 64-bit
Arasan 25.1 64-bit 8CPU
Fritz 20 64-bit 8CPU
Yukari 2025.4.1 64-bit
Lambergar 1.2 64-bit
Bagatur 5.2 64-bit
Meltdown 1.6 64-bit
Fritz 20 64-bit
Isa 4.4 64-bit
Obsidian 16.0 64-bit
Eleanor 1.0 64-bit
Obsidian 16.0 64-bit 8CPU
Horsie 1.1.0 64-bit 8CPU
Torch 3 64-bit

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 still 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 still setting everything up on his computer (using Linux).