No installation needed
Open an English demo or a free browser tool. Check each card for what is included and where your progress is saved.
A workspace for every idea on the board.
Open your games, explore variations and keep your analysis together with comments, arrows and diagrams. Set up any position with the FEN editor.
Android: PGN tools and local library are free. Stockfish 19 requires Premium or an active trial. Android subscriptions and web purchases are separate.
Your chess books. Your board. One place to study.
Read a chess PDF alongside the board. Set up a position, follow variations and keep your notes beside the page, without switching between apps.
Demo: one PDF at a time, kept in this browser. Stockfish and PGN export are included in the full Android app.
18 champions. 570 puzzles. Your journey through chess.
Discover the world champions through their stories, portraits and chess. Solve positions at each stage, answer questions and collect gems as you progress.
Steinitz and Lasker are free. The complete web edition is a separate purchase from Android. Progress stays in this browser.
Turn the positions you miss into your next practice session.
Practice forks, pins, sacrifices and mating combinations. Return to the puzzles you missed and work through each solution one move at a time.
Demo: 27 puzzles covering forks, pins and skewers at three levels. No account required; progress is stored locally.
Find the best continuation from the opening.
Recognize threats, calculate variations and punish mistakes in real opening positions. Strengthen your understanding through tactical practice.
Demo: 27 Sicilian, French and Italian positions at three levels. Your progress stays in this browser.
Work on your endgames, piece by piece.
Practice pawn, rook, bishop, knight, queen and mixed endgames. Follow the solution, revisit difficult positions and improve your calculation.
Demo: 27 pawn, rook and bishop endgames at three levels. No registration required.
Recognize the pattern. Calculate the checkmate.
Practice mating patterns from mate in one to longer combinations. Choose your challenge and study the complete sequence, move by move.
Demo: 24 puzzles with mates in one, two and three. The highest difficulty starts at mate in two.
Find the defensive resource in time.
Respond to concrete threats: protect your king, save a piece or stop a promotion. Discover when defense calls for counterplay.
Demo: 27 puzzles on escaping check, interposing a piece and eliminating the attacker.
Three candidate moves. One calculated decision.
Before moving, compare your candidates. Evaluate each as winning, equal or worse, find the move that gives a decisive advantage and play out the continuation.
Demo: 27 exercises across three calculation skills. No account required; progress stays in this browser.
Your time control. Ready for the next game.
Turn your phone, tablet or computer into a chess clock for your physical board. Set the time control and tap your clock after each move.
The complete web clock is free, with no account or ads. Games and settings are saved in this browser.
Your board sets the pace. Your scoresheet keeps the game.
Record your training games with a chess keyboard, times and comments. Return to each game from your personal library and take it into your next study session.
The complete browser version is free. Your games stay on this device. Android is also free, with no ads or account. For training games.
Observe. Remember. Connect. Solve.
Give your mind a different kind of puzzle. Use a chessboard to practice memory, attention and logic, whether you are new to chess or already play.
Available on Android with 58 free challenges and an optional one-time purchase to unlock all 444. The browser demo includes the free area; no purchases are available in this demo.
Learn to see the board in your mind.
Practice blindfold play, memorize opening lines and reconstruct positions. Adjust the visual challenge with visible pieces, circles or hidden pieces.
Demo in English: three opening lines, position reconstruction and ten moves per side against Stockfish 19 at level 1. Progress stays in this browser, separately from Android.
Study. Train. Play.
Try a demo or open a free tool in your browser. Your next chess session starts here.
