The 6x6 Sudoku puzzle is played exactly the same way as the standard Sudoku - you have to put the numbers so that they appear only once in each row, column, or block. 6 by 6 Sudoku puzzles are easier than 9 by 9, so they are suitable for beginners and younger people or if you just do not have much time to play. You can play the puzzle online or print it on paper. Enjoy the game.