Step Up to the Challenge

These puzzles are designed for serious thinkers. With fewer starting clues and trickier patterns, Hard Sudoku requires patience, logic, and strategy. A great choice if you’re ready to push your skills further.

  • 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 19
Play Now
Day 15
Play Now
Day 11
Play Now
Day 7
Play Now
Day 3
Puzzles in this list are being released starting October 8th, 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.

Slow down or push the limits?
Switch to Easy, Medium, or Master.

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