Simple, elegant sudoku
Enter multiple numbers in a cell for pencil marks. A 'clean run' is where the answer is not viewed and no mistakes are found when clicking the 'check my work' button. Best times for clean runs are saved for each level. Enjoy!
To play, Javascript of your web browser must be activated and you need Flash player which must be installed or upgraded on your computer. You can download this free player on the Plugins page.