A free chess trainer where the coach explains your games in plain English
Coachess is a free chess training tool that provides personalized game analysis with explanations in plain English, helping players understand their moves and improve their skills.
Background
- Chess improvement traditionally requires either a human coach (expensive and not always available) or engine analysis (which outputs confusing numerical evaluations like "+1.2" and computer move suggestions that are hard for humans to understand).
- Many existing chess analysis tools (Lichess, Chess.com, ChessBase) show engine evaluations but don't explain *why* a move is good or bad in natural language.
- Coachess.app is a free tool that takes a chess game and generates commentary in plain English, simulating what a human coach would say — highlighting mistakes, explaining tactical ideas, and suggesting improvements without requiring the user to interpret engine numbers.
- This sits in the broader trend of using large language models (LLMs) to make specialized knowledge more accessible — in this case, bridging the gap between raw computational analysis and human understanding for chess players.