Sudoku

According to the Metro, the free daily newspaper, I am living with a genius. It would seem that if you can finish their Sudoku puzzle within a certain allotment of time, well you're a genius.
What strikes me as odd, is that Donna has a mild allergy towards numbers. Taxes being the worst irritant, she breaks out into a cold sweat just at the thought of filling in little numbers in little squares and following the results down the page in a systematic and driven fashion. Well except for Sudoku.
Somehow these little squares within squares are special. She is drawn to them like an accountant to loop holes. As are so many people lately. Sudoku is sweeping the nation. Perhaps Revenue Canada should look into a Sudoku tax form. That's right. Who's the genius now? Eh?