Chess Engines Diary

  JustBot is my first attempt at creating a UCI chess engine with magic bitboards without any agentic or LLM assisted coding. Author: Hassan Fakih  Rating Chess Engines Diary CEDR=3828 JustBot what's new? Add SHA to Dev Version ID Bench: 7574612 JustBot 0.5.0 vs other engines: Caissa 2.0 17/36 -2 36 Games Zigqueen 6.3.0 15.5/31 +0 31 Games Hobbes 3.0 13/30 -4 30 Games Chess-System-Tal 3.00 14/26 +2 26 Games Triumviratus 7.0 JA 2026-09 9.5/21 -2 21 Games Tcheran 13.0 11.5/20 +3 20 Games Igel 3.7.0 10.5/20 +1 20 Games RubiChess 01082026 10/20 +0 20 Games Viridithas 20.0.0 10/20 +0 20 Games Halogen 16.8.0 10/20 +0 20 Games Peras 3.6.0 10/20 +0 20 Games Fritz 21 10/20 +0 20 Games Berserk 14 9.5/20 -1 20 Games Raphael 4.3.0 dev-4a2c693 9.5/20 -1 20 Games Astra 7.0 9.5/20 -1 20 Games Minke 7.0.0 9.5/20 -1 20 Games Devre 7.0 JA 9.5/20 -1 20 Games Integral 8 JA 9.5/20 -1 20 Games PlentyChess 8.0.0 JA 9/20 -2 20 Games Stormphrax 8.0.0 9/20 -2 20 Games Cinder 0.6.1 8.5/20 -3 20 Games J...

  The 4th Chess Engine League, organized by Chess Engines Diary, has concluded. This marks the end of the regular season, and attention now turns to the TOP 64 qualifying stage. Koivisto 9.2 JA finished in first place, followed by Patricia 5.1 in second and rofChade 3.1 in third. These three engines have earned promotion to the 3rd League. The engines that finished in 13th to 16th place were relegated and will compete in the qualifying stage next season. CEDR Chess Engine League - more . CEDR 903.628 games download (until 30.06.2026) All Games 129.244 CEDR from 01.11.2026 download . 💾 Tournament games : 480 download 💻 Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB   🖬 GUI - GUI - Myracle, book:avt-2026b #chessenginesdiary Country - Poland, City - Malbork   🕓 Time 3'+3" Pl Engine Points % W-L-D note 1 Koivisto 9.2 JA 36.0/60 60.0 +13-1=46 promotion 2 Patricia 5.1 34.5/60 57.5 +13-4=43 promotion ...