OpenFile Chess

OpenFile Chess is a puzzle trainer and interactive chess reader in one app. Train with thousands of puzzles powered by spaced repetition. Your rating adapts as you improve, and puzzles are organized by theme — forks, pins, mates, endgames, and more. Explore alternate lines freely, or turn on Stockfish 17 for instant analysis. Read Chess Fundamentals by José Raúl Capablanca — one of the greatest chess books ever written. Step through every example move by move with full annotations. FEATURES • Puzzle trainer with spaced repetition and ELO tracking • Dozens of themed decks: tactics, mates, endgames, phases • Explore mode to try alternate lines on any puzzle • Stockfish 17 engine analysis on any position • Full text of Chess Fundamentals (1921) • 71 interactive games with move-by-move annotations • Flip board, night mode, and board color themes