Please play Sudoku Classic on Game1001.net for free. Help your brain stay healthy with Sudoku! In this fun logic puzzle your task is to fill the 9x9 grid with numbers. Each column, row and 3x3 block can contain the numbers 1 to 9 only once.All copyrights and trademarks of this game are held by owners and their use is allowed under the fair use clause of the Copyright Law. If you believe we violating your copyrights, please advise us at [email protected] in order that we can solve the problems.