UCI Chess Engine
VeryChess
A project focused on developing chess engine playing on personal PCs, evaluation and testing chess engines. Built by Oleh Sych.
About VeryChess
VeryChess is a UCI-compatible chess engine developed as a personal software project at the intersection of chess and programming. The engine is designed to work with UCI-compatible chess GUIs such as Arena, Cute Chess, and BanksiaGUI.
Development is focused on building a clean, understandable architecture, improving engine strength through systematic testing, and documenting every step of the journey publicly.
About the Author- UCI-compatible — works with standard chess GUIs
- Tested in round-robin tournaments
- Releases documented with full change notes
- Results published with PGN game files
Latest Release
All releases →VeryChess 0.4.0
What's new
This release covers two areas: a sharper quiescence search and a rebuilt static evaluation.First, the quiescence search — the tactical search that runs at the leaves of the main search to resolve pending captures before the position is evaluated — was responsible for roughly 87% of all nodes searched, much of it spent on hopeless captures (a queen taking a defended pawn, a rook grabbing a piece and being lost immediately).
Second, the hand-crafted evaluation was rebuilt from a flat, hard-switched function into a tapered, component-based one — smoothly interpolated between middlegame and endgame by game phase — and gained full-board mobility, rook file evaluation, and drawn-endgame scaling.
Latest Tournament
All tournaments →VeryChess 0.2.0 benchmark tournament
Tournament for benchmarking VeryChess 0.2.0, the first version of the engine to support multi-threaded search.
VeryChess PremiumLeague #1
First public tournament for against 46 engines (including VeryChess) of top strongest engines build for MacOS to establish a performance baseline.
Project Goals
- Build a clean, understandable chess engine architecture
- Improve engine strength step by step through testing and measurement
- Run repeatable, documented engine tournaments
- Publish releases, experiments, and progress openly