The latest CCRL update (26th July 2025)

[Graham Banks]

The latest CCRL Rating Lists and Statistics (26th July) 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, Andres and Matt).
- Ray Banks 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.
- Jonathan Gilchrist for the utility CCRL notifier, which alerts engine authors when their engine is playing in a live broadcast.
- 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.
- all engine authors. Without you, CCRL wouldn't exist.

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).

119th Amateur Series Division 10 (finishing Tuesday) Web based viewer http://ccrl.live/16070
119th Amateur Series Division 11 (finishing Wednesday) Web based viewer http://ccrl.live/16069
119th Amateur Series Division 12 (finishing Thursday) Web based viewer http://ccrl.live/16073
119th Amateur Series Division 13 (continuing) Web based viewer http://ccrl.live/16068
Profundity And Secrecy Tournament (starting Tuesday) Broadcast link to be advised
New Tournament (starting Wednesday) Broadcast link to be advised
New Tournament (starting Thursday) Broadcast link to be advised

Astra 6.0 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16061
Clover 8.2 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16062
Torch v4 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16063

pawnocchio 1.8.1 64-bit (continuing)
Torch v4 64-bit Gauntlet (continuing)
Clover 8.2 64-bit Gauntlet (finishing Tuesday)
Astra 6.0 64-bit Gauntlet (finishing Wednesday)
Sirius 9.0 64-bit Gauntlet (finishing Thursday)
Arasan 25.2 64-bit Gauntlet (starting Tuesday)
JackyChess 25.04 64-bit Gauntlet (starting Wednesday)
Ynode 0194 64-bit Gauntlet (starting Thursday)

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):

Bread 1.5.0 64-bit
Astra 6.0 64-bit
Pluto 1.0.1 64-bit
Saturn 1.3 64-bit
Bagatur 5.3 64-bit
Aku 2025.7.9 64-bit
Arasan 25.2 64-bit
bitbit 1.4 64-bit
Arcanum 2.6 64-bit
Dolphin 1.0 64-bit
Maelstrom 3.2.0 64-bit
MOBMAT 0.903d 64-bit
Alpaca 0.2.5 64-bit
Clover 8.2.1 64-bit

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

Tarnished 3.0-Warrior 64-bit (in progress)

Chess324 (thanks to Basti)

On hold while Basti gets the FRC list updated

DFRC 40/2 testing (thanks to Basti and Matt):

14 engines listed to date.

[Modern Times]

The sub-list links are missing/broken on the 40/15 list.

[Graham Banks]

The sub-list links are missing/broken on the 40/15 list.

Yes, and I've yet to find the issue.