Sudoku Sum


  • Click the square you would like to start with
  • Move the caret by stepping with the arrow keys (computer only).
  • Change writing direction with the space bar.
  • Erase with delete och backspace. Backspace erases backwards. You can also write a new letter.

Our digital puzzles are developed in HTML5, CSS and JavaScript and can be viewed across multiple devices (pc, tablet and smart phone) without requiring any plug-ins