Play, train, and improve — with an AI coach that explains the why behind every move.
Play a full game against Stockfish at five strength levels — from gentle beginner to full strength.
Set up any position, see the engine's evaluation and best lines, and ask the AI coach what to play.
Solve curated puzzles — forks, pins, mates — with instant feedback and an AI hint when you're stuck.
Walk through the fundamentals step by step: opening principles, basic checkmates, and core tactics.