I love Sudoku! I am proud that I can solve an Andoku "Ultra Extreme" puzzle in an average of 7 minutes, 54 seconds.

So when I set about updating this web site, I naturally jettisoned all my 2005 games that are really meant for most people's intelligence, like Towers of Hanoi and Yahtzee. (Beside, the Javascript was so outdated that the original source of the games no longer exists.)

This is a Javascript version of Sudoku that I hope is fiendishly difficult. It takes ME an average of 10 minutes ... and that's with lots of use of "Check" and "Undo."

Trying for Fiendish Sudoku