Online Sudoku

Current puzzle level: hard

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Generate a new Sudoku puzzle:
easy   medium   hard   very hard

Online Sudoku - Load / Restore

The board can be converted into text strings, so if you want to save a game, copy-paste its associated string in a safe place (or email it to yourself or to one of your friends); game restoration can be realized based on them.

  • Save initial board configuration
  • Save current configuration
  • Load a previously saved game

Online Sudoku - The Rules

Here you can play, on the web, Sudoku puzzles online.

The 9x9 grid

  • is made up of 3x3 subgrids (called regions)
  • starts with various numerals given in some cells (the givens)

The aim of a Sudoku puzzle is

  • to enter a numeral from 1 through 9 in each cell of a grid
  • each row, column and region must contain only one instance of each numeral

Every puzzle has an unique solution.

There are no daily puzzles because you can generate a new one by clicking the desired difficulty level.

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