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Bagatur.cpp 1.1 JA - new version chess engine

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  Bagatur.cpp - Port of Bagatur chess engine from Java to C++ Author: Krasimir Topchiyski  Rating CEDR=3528 Bagatur.cpp C++20 port of the Bagatur chess engine. The project has four goals: Make testing easier — ship a single self-contained exe, with no dependency on Java or an external NNUE file. Compare Java and C++ performance. The C++ port runs at almost 2× the NPS of the Java engine and is roughly 25 Elo stronger. Showcase, in C++, the two things that make Bagatur's search distinctive: an MTD(f) root search in place of classic PVS, and a consensus-based Lazy SMP search in which the worker threads vote to decide the best move for a position. Resolve the SMP scaling issue of Bagatur on Java, described in SMP.scaling.issue.txt. Whats' new? Fix bug in SMP version where Bagatur.cpp send illegal move (0000) in some positions, like "8/1p1P4/1K2Q3/8/p2k2p1/P5P1/2p1N3/8 b - - 1 59" Jim Ablett compiles Bagatur.cpp 1.1 JA download     mirror

Russell 1.4 - new version chess engine

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  Russell - UCI chess engine,  c++20. Author: Dominic Fuentes  Rating CEDR=2696 Russell 1.4 download

Caligula 8.0 - new version chess engine

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Caligula is a freeware winboard compatible chess engine based in TSCP. Caligula use by default 256 Mb for hash. You can change hash with command line. Caligula, a chess program by successor of Toledo 2000. Caligula played a strong 6th Spanish Open Computer Chess Championship 1999 and became Spanish Champion and runner-up behind Chess Tiger, winning from Tiger [2] and Diep, but losing from its countrymen programs Eugen and Ruy Lopez. ( source ) Caligula - what's new? - NEW: full UCI protocol support (previous versions were Winboard-only). Caligula now works with any UCI-capable GUI (Myracle GUI, Arena, BanksiaGUI, Cutechess, Fritz, Shredder, Chess for Android, etc.) in addition to Winboard. - NEW: strength levels, calibrated against Stockfish 17.1: - UCI_Elo (750-3200), with FIDE/CCRL scale selection. - Skill Level (0-100, 100 = full strength). - 13 Random Easy Levels, from "Random_Move" to "Magnus_Carlsen_2882". - New NNUE evaluation network (750-s_eval-65). ...

The Battle Begins: CEDR Cup 10/2026 Kicks Off Today!

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  The Battle Begins: CEDR Cup 10/2026 Kicks Off Today! Today marks the start of the CEDR Cup - 10/2026! This is a single-elimination bracket tournament featuring the top eight chess engines from the Chess Engines Diary ranking as of October 1, 2026.  Each match will consist of a 10-game classical series, with sudden-death tiebreaks until the first decisive win in case of a draw.

Monty-dev-20260512 wins Challenger Group A Season 10/2026

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  The first qualifying group of the Chess Engine League (Top 64) has wrapped up. Monty-dev-20260512 claimed the top spot, with Sirius 9.0 in second, Altair 7.2.1 JA in third, and Superultra 2.1 JA in fourth. All four moved on to League 4. Meanwhile, engines placing between 25th and 30th were relegated to qualifying group B. You can find more information about the CEDR Chess Engine League on the dedicated website - LEAGUE . CEDR 903.628 games download (until 30.06.2026) All Games 72.725 CEDR from 01.10.2026 download . 💾 Tournament games : 165 download 💻 Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB   🖬 GUI - Myracle, book:avt-2026b #chessenginesdiary Country - Poland, City - Malbork   🕓 Time 3'+3" Pl Engine Points Bu W-L-D note 1 Monty-dev-20260512 7.5/11 68.0 +5-1=5 promotion 2 Sirius 9.0 7.0/11 69.0 +4-1=6 promotion 3 Altair 7.2.1 JA 7.0/11 68.0 +3-0=8 promotion 4 Superultra 2.1 JA 7.0/11 59.5 ...