♟ Analyze a Position

Set up any position — drag pieces, paste a FEN, or scan a screenshot — and get Stockfish's best move instantly.

♘ Play a Game

Play a full game against Stockfish at a strength you choose, from beginner to full engine power.

📷 Screenshot Scanner

Scan a screenshot from Chess.com, Lichess, or a book diagram — recognized entirely on your device, nothing ever uploaded.

📋 Game Review

Step back through a finished game move by move, with engine grading and tactical notes on every move.

🧩 Puzzle Trainer

Solve rated tactics puzzles and build a streak — your progress is saved right in your browser.

♔ Checkmate Puzzle Solver

Find the forced mate in tricky positions, at your own pace.

🔁 Sequence Trainer

Drill a specific sequence of moves until it becomes automatic.

📈 Elo Rating Calculator

See exactly how a result will move your rating, with the K-factor explained.

⬇ Import Lichess Games

Pull in a game from Lichess to analyze or review, move by move.

📖 Learn the Rules

Full explanations of castling, en passant, promotion, check & stalemate, and more.

• How to Play (Full Guide)
• Castling
• Check, Checkmate & Stalemate

♜ Openings

Explained move by move, with the ideas behind each one.

• Ruy Lopez
• Sicilian Defense
• Queen's Gambit

🎯 Practice Scenarios

Set positions for drilling specific skills, from mating patterns to endgames.

• Tactical Puzzle
• Checkmate Patterns
• Endgame Study

📰 Blog

Chess history, trivia, and rules explained — plus how to put it into practice.

📚 User Manual

A complete walkthrough of every tool on the site, section by section.

♙ Checkers

Prefer checkers? Play a game or brush up on the rules.