The latest CCRL update (26th April 2025)

[Graham Banks]

The latest CCRL Rating Lists and Statistics (26th April) 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).
- 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 and Andres. 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).

117th Amateur Series Division 4 (finishing today) Web based viewer http://ccrl.live/16070
117th Amateur Series Division 5 (finishing today) Web based viewer http://ccrl.live/16066
117th Amateur Series Division 6 (finishing Monday) Web based viewer http://ccrl.live/16068
117th Amateur Series Division 7 (starting today) Live broadcast link to be advised
117th Amateur Series Division 8 (starting today) Live broadcast link to be advised
117th Amateur Series Division 9 (starting Monday) Live broadcast link to be advised
Lurking In The Dark Tournament (finishing today) Web based viewer http://ccrl.live/16073
Rising Stars v Fading Warriors 2025-I Tournament (starting today) Live broadcast link to be advised

Booot 7.4 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16061
Stockfish 17.1 64-bit 4CPU Gauntlet (finishing Tuesday) Web based viewer http://ccrl.live/16062
Viridithas 17.0.0 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16063
Cinder 0.1.4 64-bit 4CPU Gauntlet (starting Tuesday) Web based viewer http://ccrl.live/16062

Viridithas 17.0.0 64-bit Gauntlet (continuing)
Myrddin 0.93 64-bit Gauntlet (continuing)
Hiarcs 15.4 64-bit Gauntlet (continuing)
Cinder 0.1.4 64-bit Gauntlet (continuing)
Stockfish 17.1 64-bit Gauntlet (finishing Wednesday)
Stash 37.0 64-bit Gauntlet (starting Wednesday)
Various 1CPU and 4CPU Gauntlets being run by Andres

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

Eubos 4.0 64-bit
Astra 5.1.1 64-bit
Protej 0.6.8 64-bit
pawnocchio 1.5 64-bit
Turbulence 0.0.6 64-bit
Superultra 2.1 64-bit
PZChessBot 1.0 64-bit
OliThink 5.11.0 64-bit
Radiance 3.5 64-bit
Vividmind 2.0.0 64-bit
Heimdall 1.3.2 64-bit 8CPU
Astra 5.1.1 64-bit 8CPU
Chess System Tal 2.1 EAS 64-bit

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

None this week. (Basti is a student and has computer issues. He is saving up some money to get his computer fixed)
A new tester might be joining shortly and is intending to get this list updated in Basti's absence.

Chess324 (thanks to Basti)

None this week. (Basti is a student and has computer issues. He is saving up some money to get his computer fixed)
A new tester might be joining shortly and is intending to get this list updated in Basti's absence.