Sudoku puzzles are a form of logic number puzzle where each row, column, and block must contain the digits 1 through 9, and each digit may only be included once. You can find out more information on Sudoku puzzles at wikipedia. Our Soduko puzzles are all generated by our own software and each puzzle is checked to make sure it is solveable by using logic alone. If you are new to Sudoku puzzles then take a look at our help page on sudoku; if you are not new, then dive in and enjoy.