New chess engines: Cepimetheus 17.0.0, Arche 0.4.7, EEternal Chess 0.1.5, Opus 5.5, ChessAstra 1.0.2
Cepimetheus HCE Chess engine written in C.
Author: George Bland Rating Chess Engines Diary CEDR=2659
Author: George Bland Rating Chess Engines Diary CEDR=2659
Arche is a UCI chess engine in Rust. Most of the effort goes into being able to tell whether a change to it helped: every change states in its commit message how much of the tree the search looks at afterwards, one that changes how the engine plays is measured in games before it merges, and one that claims to be faster states how much faster it measured.
Author: Andrew
EEternal Chess a UCI-compatible chess engine, rewritten from my C++ implementation; the engine makes some strong moves based on a NNUE evaluation.
The C++ implementation is roughly around 2900 ELO on a single thread, based on a private Swiss tournament, provided by Qiles Corey, from the Stockfish Discord (roughly 360 engines played, some of the top engines were included). My current goal is to get the engine back to where I left the C++ engine, then get to 3000+ ELO.
Author: ECanDo
Opus a UCI chess engine written from scratch in a single 24-hour session by one language model (Opus 5), as an entry in the 24-Hour Chess Engine Benchmark.
Author: Steve Maughan
ChessAstra is a high-performance open-source UCI chess engine derivative of Stockfish, maintained under the Astra Foundation. It is designed to measurably outperform baseline Stockfish 19 through refined NNUE fine-tuning, automated data filtering pipelines, and specialized search heuristics.
Author: Astra-foundation
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