Sudoku App offers a range of game levels, game sizes, various controls for the game and player to solve the puzzle. Sudoku is a game where each row, column and each 3x3 square must contain numbers 1 to 9. Numbers can not be repeated in any row, column or 3x3 square.
Each 3x3 square is represented by a colour. To Play the Game: Select a level from the top buttons either Fair, Ok, Mid, Hard and Tough. Once selected numbers of the solution will appear in certain squares. (These numbers can not be changed and are in Italic font.) To enter a number click on a square. With each click a number from 1 to 9 will be displayed. (use the Up/Down switch to control whether numbers are increased from 1 or decreased from 9). With each number change the numbers in the selected row and column display in white and at the bottom of the screen the possible numbers for the row/column are displayed and the count of numbers in the grid. Keep on filling the empty squares and use the controls, described below to help. To start a new game press the Clear button.
Controls Use: Game Levels: Select the game level. Each level displays a different set of initial visible numbers. Fair displays the most. By going to the settings tab via the menu allows adjust for the amount of numbers for the Tough level. Undo: Reverses the last number change in the square. Hint: Adds the next number solution in the grid which is empty. Reveal: Will display the full solution in the grid. Clear: Clears the solution. Check: Will check and highlight any wrong numbers. Auto: Once all the squares are filled the system automatically check the numbers for a valid solution. Hide: Will hide the Number count an.