Description: Addictive brainteaser with literally millions of original Sudoku puzzles and a sudoku solver! 6 difficulties and 2 game modes are waiting for you!
How to play: Fill the puzzle that consists in a 9×9 grid so every row, column or 3×3 box contains the numbers from 1 to 9.
To add a "note" hold down space bar when clicking when your cursor is over the grid.
Warning: Incorrect working posture can cause musculoskeletal disorders affecting the neck, back, shoulders, arms and fingers. Read "Computer Workstation Ergonomics" article in order to understand and eliminate possible risks.