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).
- 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).
A Not So Tasty Morsel Tournament (continuing) Web based viewer http://ccrl.live/16069
The XYZ Chronicles Tournament (finishing today) Web based viewer http://ccrl.live/16064
Whale Songs Tournament (finishing Monday) Web based viewer http://ccrl.live/16065
Encounter With A Giant Tournament (finishing Wednesday) Web based viewer http://ccrl.live/16070
122nd Amateur Series Division 1 Tournament (starting today) Web based viewer http://ccrl.live/16064
122nd Amateur Series Division 2 Tournament (starting Monday) Web based viewer http://ccrl.live/16065
122nd Amateur Series Division 3 Tournament (starting Wednesday) Web based viewer http://ccrl.live/16070
Cinder 0.3.1 64-bit 4CPU Gauntlet (finishing Wednesday) Web based viewer http://ccrl.live/16061
Fire 10 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16062
Zangdar 5.00.02 64-bit 4CPU Gauntlet (continuing) Web based viewer http://ccrl.live/16063
Texel 1.12 64-bit 4CPU Gauntlet (starting Wednesday) Web based viewer http://ccrl.live/16061
Amira 1.71 64-bit Gauntlet (continuing)
Ynode 0215 64-bit Gauntlet (finishing today)
C4ke 1.0 64-bit Gauntlet (finishing today)
Dog 4.10.1 64-bit (finishing today)
Bread 2.0.0 64-bit Gauntlet (finishing today)
Anubis 3.06 64-bit (finishing Wednesday)
Prune 2.1.2 64-bit Gauntlet (starting today)
CeeChess 2.2 64-bit Gauntlet (starting today)
Cheese 3.3.0 64-bit (starting today)
Eggnog-Dev (6-15-2025) 64-bit Gauntlet (starting Wednesday)
Various 1CPU Gauntlets being run by Andres (usually 3-4 per week)
2m+1s testing since the last update report has included (thanks to Gabor):
Roque 1.1
Amira 1.71 64-bit
Scoria 3.8.51 64-bit
GNU Chess 5.60 64-bit
KnightX 4.6 64-bit
Minke 3.0.0 64-bit
Yukari 2025.11.1 64-bit
Prune 2.1.0 64-bit
PZChessBot 5.0 64-bit
FRC 40/2 testing since the last update report has included (thanks to Basti):
Princhess 0.21.0 64-bit (in progress)
Chess324 (thanks to Basti)
On hold for now.
DFRC 40/2 testing (thanks to Basti and Matt):
Code: Select all
CCRL DFRC Rating List - All engines, best versions only
5773 games played by 26 programs, run by 3 testers
Ponder off, General books (up to 12 moves), 3-4-5 piece EGTB
Time control: 30 seconds + 0.3 second
Computed on October 12, 2025 with Bayeselo based on 5'773 games
Tested by CCRL team, 2005-2025, http://ccrl.chessdom.com/ccrl/DFRC/
Rank Engine ELO + - Score AvOp Games
1 Stockfish 17.1 3797 +17 -17 68.6% -156.8 890
2 Torch v3 3786 +17 -17 64.6% -120.1 1097
3 Stormphrax 7.0.7 3744 +16 -16 60.7% -91.0 901
4 Berserk 20250321 3733 +21 -21 66.2% -137.4 552
5 Caissa 1.22 3710 +18 -18 56.1% -56.0 788
6 Viridithas 18.0.0-dev 3680 +18 -18 58.6% -75.7 672
7-8 Dragon 3.3 by Komodo 3669 +16 -16 50.6% -13.9 914
7-8 Horsie 1.1 3669 +18 -18 56.3% -58.3 680
9 PlentyChess 6.0.2 3668 +21 -21 57.2% -67.0 552
10 pawnocchio 1.7.2-dev 3651 +21 -21 55.3% -48.6 552
11 Calvin 6.1.1 3500 +21 -21 34.2% +115.0 552
12 Heimdall 1.4.0-beta-301171 3481 +21 -21 32.0% +135.6 552
13 Prelude dev (7e63da3) 3323 +26 -26 14.9% +306.8 552
14 Stash 37.0 3255 +26 -26 9.3% +391.6 680