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
| 1 League | Season 02/2026 | Rating | Score | note |
| 1. | Stockfish 18 | 3755 | new version | |
| 2. | Caissa 1.24 JA | 3709 | ||
| 3. | Integral 7 Dev 8bab JA | 3725 | ||
| 4. | PlentyChess Alamat 7.0.41 SE | 3729 | ||
| 5. | Starzix 6.1 JA | 3673 | ||
| 6. | Dragon 3.3 | 3712 | ||
| 7. | Obsidian 16.15 SE | 3732 | ||
| 8. | Quanticade Cronus 3.0 | 3686 | ||
| 9. | RubiChess 20250606 JA | 3697 | ||
| 10. | Halogen 15.31.7 | 3682 | new version | |
| 11. | Berserk 20250622 | 3713 | ||
| 12. | Clover 9.1 | 3693 | ||
| 13 | Stormphrax 7.0.0 | 3683 | ||
| 14. | Alexandria 8.1.12 JA | 3721 | Promotion | |
| 15. | Motor 0.9.0 | 3678 | Promotion | |
| 16. | Renegade 1.2.0 | 3621 | Promotion |
Chess Engines Diary League - Season 01/2026
| TOP-64 League, strongest chess engines CEDR | ||||
| 1 League | Season 01/2026 | Rating | Score | note |
| 1. | Stockfish 17.1 | 3746 | 17.0 | |
| 2. | Caissa 1.24 JA | 3710 | 16.0 | |
| 3. | Integral 7 Dev 8bab JA | 3715 | 16.0 | |
| 4. | PlentyChess Alamat 7.0.41 SE | 3724 | 16.0 | |
| 5. | Starzix 6.1 JA | 3674 | 15.5 | |
| 6. | Dragon 3.3 | 3713 | 15.5 | |
| 7. | Obsidian 16.15 SE | 3727 | 15.5 | |
| 8. | Quanticade Cronus 3.0 | 3659 | 15.0 | |
| 9. | RubiChess 20250606 JA | 3698 | 15.0 | |
| 10. | Halogen 15.28.0 | 3683 | 15.0 | |
| 11. | Berserk 20250622 | 3717 | 14.5 | |
| 12. | Clover 9.1 | 3694 | 14.5 | |
| 13 | Stormphrax 7.0.0 | 3684 | 14.5 | |
| 14. | Lc0 0.32.1 | 3699 | 14.0 | relegation |
| 15. | Viridithas 18.0 | 3690 | 13.0 | relegation |
| 16. | Lizard 11.2 | 3677 | 13.0 | relegation |
| 2 League | Season 01/2026 | Rating | Score | note |
| 1. | Alexandria 8.1.12 JA | 3722 | 20.0 | promotion |
| 2. | Motor 0.9.0 | 3678 | 18.0 | promotion |
| 3. | Renegade 1.2.0 | 3619 | 15.5 | promotion |
| 4. | Uralochka 3.42a | 3661 | 15.5 | |
| 5. | Astra 6.1.1 | 3673 | 15.5 | |
| 6. | Igel 3.6.3 JA | 3648 | 15.5 | |
| 7. | Booot 7.4 | 3649 | 15.0 | |
| 8. | Velvet 9.0.0 dev-7 JA | 3649 | 15.0 | |
| 9. | Devre 6.39 JA | 3654 | 15.0 | |
| 10. | Akimbo 1.1.0 JA | 3630 | 14.0 | |
| 11. | Titan 1.1.0 JA | 3647 | 14.0 | |
| 12. | Rebel EAS 2.0 | 3647 | 14.0 | |
| 13. | Seer 2.8.0 JA | 3646 | 13.5 | |
| 14. | Koivisto 9.20 JA | 3611 | 13.5 | relegation |
| 15. | Spaghet-BologNNese 1.0 | 3620 | 13.0 | relegation |
| 16. | Arasan 25.3 JA | 3676 | 13.0 | relegation |
| 3 League | Season 01/2026 | CEDR | Score | note |
| 1. | Reckless 0.9.0-dev-0dd5b9ac | 3725 | 20.5 | promotion |
| 2. | Horsie 1.1.0 | 3687 | 20.0 | promotion |
| 3. | Clarity 8.0.0 | 3610 | 16.5 | promotion |
| 4. | Dragon free | 3616 | 16.5 | |
| 5. | Peacekeeper 3.01 JA | 3605 | 16.5 | |
| 6. | Revenge 4.0 | 3634 | 16.0 | |
| 7. | Equisetum 1.30 JA | 3483 | 16.0 | |
| 8. | Altair 7.2.1 JA | 3468 | 14.5 | |
| 9. | Zangdar 5.00.02 | 2965 | 14.5 | |
| 10. | Rofchade 3.1 | 3622 | 14.5 | |
| 11. | Texel 1.13a4 JA | 3547 | 14.0 | |
| 12. | Slowchess 2.9 | 3559 | 13.5 | |
| 13. | Fire 10 | 3580 | 13.0 | |
| 14. | Tenax 1.0 | 3552 | 11.5 | relegation |
| 15. | Superultra 2.1 JA | 3541 | 11.5 | relegation |
| 16. | Pawn 4.0.4 JA | 3537 | 11.0 | relegation |
| 4 League | Season 01/2026 | CEDR | Score | note |
| 1 | Elixir 3.0 JA | 3578 | 21.0 | promotion |
| 2 | Sirius 9.0 | 3503 | 20.0 | promotion |
| 3 | Wasp 7.07 | 3515 | 17.5 | promotion |
| 4 | Rice 8.0 | 3468 | 17.5 | |
| 5 | Tucano 12.17 JA | 3404 | 16.5 | |
| 6 | Minic 3.43 JA | 3517 | 16.0 | |
| 7 | Marvin 6.3.0 JA | 3453 | 16.0 | |
| 8 | Winter 4.0 JA | 3479 | 14.5 | |
| 9 | Midnight 9 JA | 3441 | 14.5 | |
| 10 | Willow 4.0 | 3495 | 14.0 | |
| 11 | Smallbrain 7.0 JA | 3437 | 14.0 | |
| 12 | Komodo 14.1 *free | 3457 | 14.0 | |
| 13 | Chess-System-Tal 2.1 EAS | 3644 | 12.5 | relegation |
| 14 | Weiss 2.1 JA | 3447 | 11.5 | relegation |
| 15 | Sapling 1.2.6 | 3100 | 11.0 | relegation |
| 16 | Counter 5.5 | 3402 | 9.5 | relegation |
| League qualifiers - Chess Engines Diary (TOP-64) - 11 round | ||||
| Elim. | Season 01/2026 | Rating | Score | note |
| 1 | Cinder 0.4.1 | 3655 | 9.0 | promotion |
| 2 | Patricia 5.0 | 3434 | 8.5 | promotion |
| 3 | Leorik 3.2 | 2993 | 7.0 | promotion |
| 4 | Saturn 1.3 JA | 3431 | 7.0 | promotion |
| 5. | Expositor 5 JA | 3376 | 7.0 | |
| 6. | Arcanum 2.7 | 3321 | 7.0 | |
| 7. | Avalanche 2.1.0 | 3368 | 6.5 | |
| 8. | Stash 37.10 JA | 3420 | 6.5 | |
| 9. | Xiphos 0.6.1 JA | 3358 | 6.5 | |
| 10. | Drofa 4.1.1 JA | 3285 | 6.5 | |
| 11. | MrBob 1.3.0 JA | 3367 | 6.5 | |
| 12. | Pedantic 2.1.0 | 3369 | 6.0 | |
| 13. | Lambergar 1.3 | 3370 | 6.0 | |
| 14. | Frozenight 7.0.0 JA | 3330 | 6.0 | |
| 15. | Lynx 1.11.0 | 3276 | 6.0 | |
| 16 | Nalwald ab11891 JA | 3316 | 6.0 | |
| 17 | Defenchess 2.3 JA | 3307 | 6.0 | |
| 18 | Kuma 1.2 | 3289 | 5.5 | |
| 19 | Laser 1.8 JA | 3271 | 5.5 | |
| 20 | Cheng4 0.48 | 3453 | 5.5 | |
| 21 | Princhess 0.21.0 | 3186 | 5.5 | |
| 22 | Monty-dev-20241209 | 3431 | 5.5 | |
| 23 | RukChess 4.2.0 JA | 3331 | 5.5 | |
| 24 | Demolito 2025-12-16 | 3238 | 5.5 | |
| 25 | Svart 6 b2c7255 JA | 3271 | 5.5 | |
| 26 | Cataphract 1.2 JA | 2400 | 5.5 | |
| 27 | Flounder 0.5.0.2 | 3219 | 5.0 | |
| 28 | Zahak 10.0 JA | 3327 | 5.0 | |
| 29 | Maelstrom 3.3.0 | 3330 | 5.0 | |
| 30 | Jet 1.2 | 3245 | 5.0 | |
| 31 | Black Core 6.0 | 3416 | 5.0 | |
| 32 | Senpai 3.0.2 | 3162 | 5.0 | |
| 33 | Mittens 0.9 | 3178 | 5.0 | |
| 34 | Odonata 1.0 JA | 3303 | 5.0 | |
| 35 | Wahoo 4.0.0 | 3136 | 5.0 | |
| 36 | Aku 2025.7.9 | 3180 | 4.5 | |
| 37 | Polaris 1.8.1 | 3065 | 4.5 | |
| 38 | Danasah 9.1 JA | 3250 | 4.5 | |
| 39 | Mida 2.3.1 JA | 3038 | 4.5 | |
| 40 | ChessBrainVB 4.03a | 3205 | 4.0 | |
| 41 | Orion 1.1 | 3084 | 4.0 | |
| 42 | Spike 1.4.1 | 3090 | 3.5 | |
| 43 | LTChess 9.3 | 3348 | 2.0 | |
| 44 | Shallow v5 JA | 2912 | 2.0 | |
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| edition 27 | edition 28 | edition 29 | edition 30 | edition 31 | edition 32 | edition 33 | edition 34 |
| edition 35 | edition 36 | edition 37 | edition 38 | edition 39 | edition 40 | edition 41 | edition 42 |
| edition 43 | edition 44 | edition 45 |
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