The Ultimate Test of Skill

Think you’ve mastered Sudoku? These extreme puzzles in Master Sudoku are for true pros. Minimal clues, complex strategies, and advanced solving techniques will push you to your mental limits. Can you beat them all?

  • We post a fresh puzzle on social media every day.
  • Each level receives a new puzzle every 4 days by rotation.
  • Puzzles stay playable for 31 days before locking.

These puzzles are part of the ‘100 Day Sudoku Challenge’ originally published on our social media.

Play these top puzzles
Latest Social Media Puzzles
Puzzles from our social channels — play them here!
Play Now
Day 20
Play Now
Day 16
Play Now
Day 12
Play Now
Day 8
Play Now
Day 4
Puzzles in this list are being released starting October 9th, 2025.
Levels rotate — day numbers may skip.
Practice with Sample Puzzles
Permanent puzzles you can play any time.
Sample
1
Sample
2
Sample
3
Sample
4
Locked puzzles
There are no locked puzzles.

Locked puzzles will appear in the upcoming 100-Day Sudoku Challenge book.

Time for a breather?
Try Easy, Medium, or Hard.

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