Sudoku
Sudoku is a fun number puzzle that can be played on paper or on the computer.
The goal is to fill all the numbers into a 9x9 grid where no digit is repeated within any given row, colum or 3x3 group called a nonet (or house).
View solutions to puzzles in our books.
Get our Sudoku book
This page was created as an experiment on how to generate Sudoku playing boards. So I created a tool that can generate the boards in PHP and in Javascript. To test the system I created a game interface that you can play online or offline. (no internet required after installing)
Play sudoku using the free game for desktop or mobile devices.
view the rules for playing sudoku
view the generator source code as PHP or Javascript