Sudoku

Play Sudoku online for free. Fill the 9x9 grid so every row, column and 3x3 box contains the digits 1-9. Classic logic puzzle, no download required.

Difficulty
Time
0:00
Mistakes
0

Game Area

How to Play

Controls

  • Click a cell, then pick a number from the pad.
  • Use number keys 1-9 to fill, Backspace to erase, arrows to move.
  • The number pad works for both mouse and touch devices.

About

Sudoku is a classic number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, row and 3x3 box contains all of the digits from 1 to 9 without repetition.

Tips

  • Scan rows, columns and boxes for the only possible spot for a digit.
  • Note candidate numbers in tough cells to keep track.
  • Learn common patterns like naked pairs and box-line reduction.