A Sudoku puzzle consists of 81 cells which are divided into nine columns, rows and regions. The task is now to place the numbers from 1 to 9 into the empty cells in such a way that in every row, column and 3×3 region each number appears only once.
Options and Control elements
*Check Puzzle: Tests the solution of the Sudoku Puzzle. Should all cells filled correctly then there will be a positive message, otherwise there will be a negative message. *Restart: Restarts the game (already entered entries will be deleted). *Hint: Gives a random solution (there are only five hints). *Timer: Enables the player to know the time it took to solve the puzzle (two options: start and pause).