A quieter way to think.
Five sudoku variants, one calm place to play. No ads in your face, no timers shouting at you — just you, the grid, and the next logical step.
Get better on purpose
27 techniques, worked through on a real grid — from Naked Singles to the patterns that crack a Very Hard.
Make it yours
A free account turns this from a quick distraction into something you actually get better at.
Track your progress
Save your times, earn badges, and watch your solving get sharper week over week.
Puzzles picked for you
Recommendations that match where you are now — and nudge you toward where you want to be.
Keep your favorites
Bookmark the puzzles you loved and build a personal collection worth revisiting.
Start with an easy one
Sudoku is just logic, one step at a time. Pick an easy puzzle and learn the rhythm.
Today's challenge
Getting today's puzzle ready…
Five ways to fill a grid
Each variant changes one rule — and reshapes how you think.
Classic Sudoku
The one you already know. Nine rows, nine columns, no repeats.
PlayClue Sudoku
Start with a few hints baked in, then reason your way to certainty.
PlayPattern Sudoku
Cells grouped by pattern. Read the shape, then fill the grid.
PlayIllusion Sudoku
Trust the logic, not your eyes. Looks deceive on purpose.
PlayUltimate Sudoku
Everything turned up. For when classic no longer keeps you honest.
PlayRandom Puzzle
No category, no expectations. Just a grid and whatever it throws at you.
Roll the dicePrefer paper?
Our sudoku books, printed and shipped.
1000+ Easy to Medium Sudoku Puzzles
1000+ Hard to Extreme Sudoku Puzzles
Sudoku Reimagined
Every book includes
- Solutions for every puzzle
- Exclusive web app access via QR codes