Sudoku practice
Unlimited rounds for signed-in players. Perfect your strategy before tackling the ranked daily puzzle.
Overview
Practice Sudoku decks stack extra puzzles whenever you finish one and want another. That makes them ideal for learning advanced techniques like X-Wings or forcing chains without burning your official daily attempt.
Signed-in players keep statistics across sessions so you can see whether you are trending faster on medium or hard seeds.
Looking for the other mode? Play today’s official daily Sudoku. New to Puzzle Junkies? Browse the daily hub, the practice hub, read support & FAQs, or compare subscription plans if you want an ad-light creator workflow.
How to play
- Fill the 9×9 grid with digits 1–9.
- Each row, column, and 3×3 box must contain every digit exactly once.
- Use notes/pencil marks if the UI offers them — they help track candidates.
Strategy tips
- Start with digits that already appear eight times on the board.
- Scan rows and columns that are nearly complete to place singles.
- On harder tiers, look for naked pairs to eliminate candidates.
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Fair play & ads
Puzzle Junkies is funded in part through display advertising programmes such as Google AdSense alongside optional subscriptions. We separate practice sandboxes from official daily ladders where noted so competitive integrity stays intact. See our privacy policy for cookie and ads disclosure.