Logic · solo

Sudoku

Fill the grid so that every row, column and 3×3 box holds the digits 1 to 9 exactly once. A fresh grid every time, from easy to expert.

Difficulty

Enter a digit

How to play

Tap a cell, then a digit on the keypad or your keyboard. Given digits cannot be changed. “Erase” or Backspace clears a cell.

“Check” marks any entered digit that does not belong; “Hint” fills the selected cell (or a random empty one) correctly.

The grid is saved in your browser as you go. “New grid” starts over at the chosen difficulty.