This is a playable sudoku game The purpose of the game is to get each row column and 3×3 square to contain the numbers 1 through 9 with no duplicates The level of difficulty determines how many blank squares appear in the puzzle Click any blank square and select a value for that square from the popup menu Check your solution with the check button You can peek at a solution for the puzzle at any time Click the new puzzle button to generate a new puzzle Note that when the difficulty level is high it is possible that more than one correct solution exists for a puzzle Only one correct solution will be shown but the check button will verify a correct solution even if it differs from the solution shown