The latest CCRL update (15th February 2025)

[Graham Banks]

The latest CCRL Rating Lists and Statistics (15th February) 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).

115th Amateur Series Division 10 Tournament (continuing) Web based viewer http://ccrl.live/16066
115th Amateur Series Division 11 Tournament (continuing) Web based viewer http://ccrl.live/16072
115th Amateur Series Division 12 Tournament (continuing) Web based viewer http://ccrl.live/16071

Igel 3.6.0 64-bit 4CPU Gauntlet (on hold due to 16CPU tournament) Web based viewer http://ccrl.live/16061
Integral v7 64-bit 4CPU Gauntlet (on hold due to 16CPU tournament) Web based viewer http://ccrl.live/16062
Obsidian 15.0 64-bit 4CPU Gauntlet (on hold due to 16CPU tournament) Web based viewer http://ccrl.live/16063

Viridithas 16.0.0 64-bit Gauntlet (on hold due to 16CPU tournament)
Serendipity 1.0 64-bit Gauntlet (finishing today)
Calvin 5.1.0 64-bit Gauntlet (finishing Sunday)
Zangdar 3.04 64-bit Gauntlet (re-commencing today)
Obsidian 15.0 64-bit Gauntlet (re-commencing Sunday)
Various 1CPU and 4CPU Gauntlets being run by Andres

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

Astra 5.0 64-bit
bitbit 1.3 64-bit
Calvin 5.1.0 64-bit
Viridithas 16.0.0 64-bit
Yukari 2025.2.4 64-bit
Heimdall 1.3.0 64-bit
Inanis 1.6.0 64-bit
Simbelmyne 1.10.0 64-bit
Obsidian 15.0 64-bit 8CPU

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

Viridithas 16.0.0 64-bit (completed)

Chess324 (thanks to Basti)

Lizard 11.2 64-bit (in progress)