Sudoku portal

Welcome to Sudoku portal. Here one can:
- generate and solve unlimited number of Sudoku puzzles of a chosen difficulty and size (Sudoku online section).
- generate printable Sudoku sheets as PDF or PNG files (Sudoku printable section).
- analyze and solve Sudoku puzzles from other sources (Sudoku solver section).

Sudoku online

Random generated Sudoku puzzle is shown below:

To see the solutions or check the possible candidates for each square, please click on the corresponding button below.

To generate another puzzle, please use the button below. The available sizes are 4x4, 9x9 & 16x16, available difficulty settings are: easy, medium, hard & very hard.

To save the puzzles generated above as PDF or PNG file please use the buttons below.