OnlinePuzzles.org - Free Online Puzzle Games. OnlinePuzzles.org is a free online puzzle game platform offering Sudoku, Number Puzzle, Word Puzzle, and Memory Match games. Part of FlameAI Studio ecosystem. No registration required. Instant play. Brain training and cognitive development through logic puzzles, spatial reasoning games, word games, and memory games. Educational resources, puzzle strategies, and brain training articles available. Publisher: FlameAI Studio. Location: Global. Language: English (US).

OnlinePuzzles.org

Printable Sudoku Puzzles (Free PDF)

Free printable Sudoku puzzles with PDF downloads and answer keys. Choose a difficulty level and start solving offline.

Today's printable Sudoku - December 23, 2025 (UTC)

Updated daily with new puzzles.

Easy Printable Sudoku

Great for beginners and casual practice. Plenty of givens to build confidence.

View Easy Puzzles

Medium Printable Sudoku

Balanced difficulty with fewer clues. Ideal for daily practice.

View Medium Puzzles

Hard Printable Sudoku

Fewer clues and tougher logic paths. For experienced solvers.

View Hard Puzzles

Printable Sudoku Guidelines

  • Each PDF contains one 9x9 puzzle per page
  • Download a separate answer key for quick checking
  • Easy: 30-40% blanks, Medium: 45-55%, Hard: 55-65%

Prefer playing online?

Play Sudoku OnlineTry Daily Sudoku

Key Points

  • Printable Sudoku rotates daily using a UTC date seed.
  • Each difficulty offers a single focused puzzle per day.
  • PDFs include a clean grid and a separate answer key.
  • Previews and downloads always stay in sync.

Steps

  1. Select Easy, Medium, or Hard to view today's puzzle.
  2. Preview the grid, then download the PDF or answer key.
  3. Revisit the same date to reproduce the same puzzle.
  4. Switch to Sudoku online for instant play.

Examples

A beginner prints the Easy puzzle and checks the answer key after solving.

A commuter downloads Medium puzzles for offline practice during travel.

A student uses the Hard puzzle as a daily logic warmup before class.

FAQ

How many Sudoku puzzles are available each day?

Each difficulty shows one daily printable puzzle.

Do the PDFs include answers?

Yes, an answer key PDF is provided alongside the puzzle.

Can I access older puzzles?

You can use the printable archive to revisit prior dates.

Is the printable set updated in my timezone?

The daily rotation uses UTC to keep the schedule consistent.

Do I need an account to download?

No account is required to access the PDFs.

Where can I play without printing?

Use Games or Daily for online play.

Summary

Printable Sudoku keeps daily practice focused with one puzzle per difficulty and reliable PDF downloads. The rotation stays consistent so routines are easy to maintain.