Sudoku AcademyMaster the art of logic with mathematically generated puzzles across 17 difficulty levels.JavaScript is required to play Sudoku Academy. Please enable JavaScript in your browser to access the game.What you'll find at Sudoku Academy

17 difficulty levels — from Naked Single (L1) to Forcing Chain (L17), every grade backed by a real solving technique.

Pure-logic solver with progressive hints and step-by-step walkthroughs — never any guessing.

Hand-curated puzzles — including transcribed New York Times sets, growing every week.

Manual entry mode — type any sudoku from a newspaper or book and the engine grades it, hints it, and walks you through every deduction.

Scribble canvas for pencil-and-paper-style notation, with undo/redo.

Accessibility — left-hand / right-hand UI toggle, customisable themes, victory audio toggle.

Free play covers Levels 1–3 with no sign-up. Premium ($6.99/mo or $59.88/yr) unlocks Levels 4–17 plus the curated library.

Strategies you'll learnNaked Single · Hidden Single · Naked Pair · Hidden Pair · Pointing Pair · Box-Line Reduction · Naked Triple · X-Wing · Swordfish · Empty Rectangle · XY-Wing · Skyscraper · Forcing Chain.

Founding Member offer: Be one of the first Founding Members. Join free now and keep Premium for life. Offer ends Jan 01, 2028.

Choose Your Plan

Unlock all 17 difficulty levels, interactive tutorials, and compete on leaderboards.

Free

Get started — no sign-up needed

$0forever

Levels 1-3 unlimited
Step-by-step hints
Solve walkthroughs
Guest play (no email required)
-Levels 5-17
-Interactive tutorials
-Ad-free experience

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Premium

Full access to everything

$4.99/month

All 17 difficulty levels
Unlimited puzzles
All 17 interactive tutorials
Hints & pattern assists
Ad-free experience
Full statistics
Daily challenges
Leaderboards
Priority support

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All plans include unlimited Naked Single and Hidden Single puzzles. Cancel anytime — cancellations are not prorated and no refunds for unused time. Prices in USD.

Lifetime is a single one-time payment with no recurring charges, no auto-renewal, and no expiry — keep access for the lifetime of the service.