SUDOKU+ Support

See also the FAQ.

How to play the game

Objective

To solve the sudoku puzzle, you have to enter the numbers from 1 to 9 in the grid, in such a way that each number appears exactly one time in every row, column and 3x3 square.

To get more information about solving tactics, I recommend the article about sudoku puzzles in Wikipedia.

Game controls

Using keys:

• Move the cursor with the joystick or arrow keys on the phone keyboard.
• Press keys 1..9 to insert a number. If you insert a number where there is already another number, the new number will appear. (You can't insert a number on top of the given numbers in the puzzle.)
• Press and hold keys 1..9 to highlight that specific number in the puzzle. 
• Press 0 to erase a number from the puzzle. (The given numbers can't be erased).
• Press Ü (star) to shift between 'pencil-mark' mode an normal mode. In 'pencil-mark' mode, the keys 1..9 are used to insert and remove small dots, that can be used to help remember what numbers are allowed where in the puzzle. 
• Press # to change the color scheme.

Using touch screen:

• Tap the field where you want to insert or change a number.
• Tap the buttons 1..9 to insert a number. If you insert a number where there is already another number, the new number will appear. (You can't insert a number on top of the given numbers in the puzzle.)
• Inserting the same number again into a field will erase the field.
• Tap twice in a field that already has a number to highlight that specific number in the entire puzzle. 
• Tap twice in an empty field to shift between 'pencil-mark' mode an normal mode. In 'pencil-mark' mode, the bittons 1..9 are used to insert and remove small dots, that can be used to help remember what numbers are allowed where in the puzzle. 

 

Menu items

On most phones, the following menu items will be available pressing a button saying "MENU" or "MORE". On some phones, the items might be accessible directly.

• Undo. Undo last change. 
  
  
• Help. If you have made an error, this menu lets you delete all changes after the error appeared, rendering the puzzle in 'solvable' state again. If the puzzle doesn't contain errors, the function will show a field that can be solved with the current information in the puzzle.
  
  
• New game. This menu item starts a new game. The previous game will not be saved. A menu will appear with a choice of five different options.
  
  

  1. Easy difficulty level
  2. Medium difficulty level
  3. Hard difficulty level
  4. Expert difficulty level
  5. Empty puzzle
  

  
  Option 5, "Empty", can be used to enter a sudoku puzzle from the newspaper or another source, or it can be used if you want to try the challenge of creating your own sudoku puzzle.
  
  
• Solve.This function will solve the current puzzle, if possible.
  
  
• Restart game. This function will clear all numbers that have been entered in the current puzzle.
  
  
• Rules. Displays a short message with the game rules.
  
  
• Auto pencilmark. Calculates the pencil-marks for the puzzle. Using this function will add 1 minute to your time.
  
  
• Pencilmark show/hide. Will show or hide the pencil-marks on the screen.
  
  
• Clear pencilmark. Clears all pencil-marks.
  
  
• Get full version. This command only appears in the free version. Activate this menu item to read out your serial number. An activation key for your serial number can be bought on this site.
  After receiving the activation key, enter the key in the message box and then press OK. The full version of SUDOKU+ will then unlock.