Frequently Asked Questions
Effective Date: June 2026
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Last Updated: August 2026
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Float Chess Official Document
1. General Questions
What is Float Chess?
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Float Chess is a free online chess website where players can play chess against computer engines, study opening theories, solve daily tactical puzzles, and re-play grandmaster tournament matches without registering an account.
Is Float Chess completely free to use?
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Yes! Float Chess is 100% free with no hidden subscriptions, paywalls, or feature limits. All engine analysis levels, puzzles, game database files, and learning guides are freely available to everyone.
Do I need to create an account to play?
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No login is required. You can play vs the computer, analyze positions, and solve daily puzzles instantly. You can optionally sign up to sync your custom profile ratings and achievements across devices.
2. Gameplay & Engine
Which engine runs on Float Chess?
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We integrate the official Stockfish 18 engine compiled directly into asm.js / WebAssembly. This allows high-depth evaluation and tactical accuracy running natively in your browser.
Can I adjust the computer difficulty level?
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Yes, on the Play page you can choose difficulty levels ranging from Beginner (Level 1, ~800 ELO) up to Master & Grandmaster (Level 10+, 2500+ ELO).
3. Puzzles & Tactics
How does the Daily Puzzle rating work?
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Solving tactical puzzles correctly increases your tactical ELO rating and increments your streak. Incorrect moves lower your rating slightly and offer progressive hints.
4. Learning & Openings
Where can beginners start learning chess rules?
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Visit our How to Play and Learning Center pages for step-by-step guides on piece movements, castling, en passant, checkmates, and strategic principles.
5. Account & Privacy
How is my local preference data saved?
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Your board colors, sound toggles, and puzzle streaks are stored locally in your browser's LocalStorage. No tracking cookies are used without your permission.