Chess, the way it was
meant to feel.
A world-class engine, every opening worth knowing, and thousands of puzzles — wrapped in the most beautiful board you've ever played on. No account. Your progress lives right here on your device.
Go from curious to dangerous.
Five rooms in the atelier. Each one remembers where you left off.
Play the engine
Eight strength levels of Stockfish 18, a live eval bar, takebacks and hints. Play White or Black.
Start a game →Opening explorer
Walk every mainline and variation on a real board, with the ideas explained move by move.
Browse openings →Puzzles & Rush
Every puzzle is proven solvable. Solve at your pace, or race the clock in Puzzle Rush.
Solve now →Guided lessons
Narrated, interactive lessons that talk you through the plans — with real studio voice-over.
Take a lesson →Your progress
An evolving rating, streaks, opening mastery and XP — all saved privately in your browser.
See your stats →No account. Ever.
Everything runs in your browser and saves to this device. Export your progress any time.
Your next game is one click away.
Pick a side, pick a level, and let the pieces fly. We'll keep score.