Since you’re here...

We hope you will consider supporting us today. We need your support to continue to exist, because good entries are more and more work time. Every reader contribution, however big or small, is so valuable. Support "Chess Engines Diary" even a small amount– and it only takes a minute. Thank you.
============================== My email: jotes@go2.pl



League


New Chess Engine Testing Policy

 Chess Engines Diary League - 01.01.2026

Hardware & Technical Specifications

To ensure fair and consistent results, all engines in the Chess Engine League (February 2026 Edition) compete under the following conditions:

Computer Hardware

  • CPU: [AMD Ryzen 9 6900HX / Asus Zenbook]

  • Cores/Threads: [4 Threads per engine]

  • RAM: [32 GB DDR5]

  • GPU: [ NVIDIA GEFORCE RTX 4080]

Tournament Settings

  • Time Control: [3 minutes + 3 seconds increment (3' + 3')]

  • Hash Size: [ 2048 MB]

  • Opening Book: [Perfect 2021]

  • Tablebases: [5-man]

  • Contempt: 0 (Disabled for all engines)

  • GUI / Controller: [Arena GUI/ Aquarium GUI]

Elite Chess Engine League - Top 64

The league consists of 64 engines—mirroring the 64 squares of a chessboard. The competition is structured into four divisions: Leagues 1, 2, 3, and 4. A system of promotion and relegation will be applied at the end of each season.

Top performers from the Qualifying Rounds will advance to the 4th League. To be eligible for the qualifying stage, an engine must meet the following criteria:

a) New engine versions must achieve a score of at least 50% in a preliminary test against our benchmark (either Critter 1.6a or the engine currently ranked 70th in the CEDR rankings).

The Qualifying Rounds will be held within a single group, with the specific tournament format determined by the total number of "promising" engines participating.

The time control remains 3 minutes plus 3 seconds increment per move (3'+3").

See also post: New Chess Engine Testing Policy (Starting Jan 1, 2026)

#chessenginesdiary

The 03/2026 edition of the Chess Engine League is officially underway!

TOP-64 League, strongest chess engines CEDR
1 League Season 03/2026 Rating Score note
1-2. Stockfish 18 3753 16.5  
1-2. Reckless 0.9.0 3743 16.5  
3. Obsidian 16.15 SE 3733 16.0  
4. Alexandria 9.0.0 3723 16.0  
5. Integral 7 Dev 8bab JA 3726 15.5  
6. PlentyChess 7.0.55 3731 15.5  
7. Berserk 20250622 3714 15.0  
8. Halogen 16.2.0 3698 15.0  
9. Clover 9.1 3698 15.0  
10. Caissa 1.24 JA 3710 14.5  
11. Astra 6.1.1 3675 14.5  
12. Quanticade Cronus 3.0 3689 14.5  
13 Dragon 3.3 3712 14.0  
14. Motor 0.9.0 3680 14.0  
15. Stormphrax 7.0.0 3694 14.0  
16. Uralochka 3.42a 3663 13.5  
         
2 League Season 03/2026 Rating Score note
1. Viridithas 19.0.1 3699 20.0  
2. Lc0 0.32.1 3706 16.5  
3. Lizard 11.2 3655 16.5  
4. Horsie 1.1.0 3687 16.0  
5. RubiChess 20250606 JA 3698 16.0  
6. Starzix 6.1 JA 3674 15.0  
7. Arasan 25.3 JA 3675 15.0  
8. Velvet 9.0.0 dev-7 JA 3650 15.0  
9. Koivisto 9.20 JA 3612 14.5  
10. Booot 7.4 3649 14.5  
11. Devre 6.39 JA 3654 14.0  
12. Rofchade 3.1 3621 14.0  
13. Seer 2.8.0 JA 3645 13.5  
14. Renegade 1.2.0 3623 13.5  
15. Rebel EAS 2.0 3646 13.5  
16. Igel 3.6.3 JA 3648 12.5  
         
3 League Season 03/2026 CEDR Score note
1. Pawnocchio 1.9.2 3682 19.0  
2. Spaghet-BologNNese 1.0 3619 17.5  
3. Titan 1.1.0 JA 3645 17.0  
4. Cinder 0.4.1 3653 16.5  
5. Revenge 4.0 3633 16.0  
6. Akimbo 1.1.0 JA 3629 16.0  
7. Clarity 8.0.0 3609 16.0  
8. Altair 7.2.1 JA 3591 15.0  
9. Fire 10 3579 15.0  
10. Equisetum 1.30 JA 3482 15.0  
11. Peacekeeper 3.01 JA 3604 14.5  
12. Dragon free 3615 14.5  
13. Elixir 3.0 JA 3584 14.0  
14. Texel 1.13a4 JA 3550 14.0  
15. Tenax 1.0 3552 11.5  
16. Wasp 7.07 3517 8.5  





CEDR Chess Engines League archived results

Season 03/2026, 
1 League, 2 League, 3 League, 4 League, Qualifiers. 

Season 02/2026, 

 
Season 07/2025:
1 League, 2 League, 3 League. Qualifying: E01, E02, E03,E04,E05,E06,E07, E08. 

Season 06/2025:
1 League, 2 League, 3 League. Qualifying: E01, E02, E03,E04,E05,E06,E07, E08. 


♖ edition 03/2025 ♖ edition 06/2024 ♖ edition 05/2024 ♖ edition 04/2024 ♖ edition 03/2024 ♖ edition 01/2024♖edition 01/2023 ♖edition 02/2023  ♖ edition 03/2023  ♖ edition 04/2023   ♖ edition 05/2023  ♖ edition 06/2023  ♖ edition 07/2023  ♖ edition 08/2023  ♖ edition 01/2015 ♖ edition 08/2014 


════════════════════════════════════════════════════


Chess Engines Diary League: games, tables and pdf.


═══════════════════════════════════════════════════════


Comments

Post a Comment