To run or not to run in rain? – A math solution

Ever faced with the inability to take decision whether to run or not to run in rain? or in a snow fall? The question is of course not about running on heavy rain.Most of the time when it drizzles you are left with inability to take decision whether you should ran like mad to home [...]

And hence the sudoku is solved

J. F. Crook has provided a pencil and paper algorithm for solving the most celebrated puzzle – sudoku. This mathematical method explains how preemptive sets are used in solving them. I think, for solving sudoku this way you might need to know more math than what you need to know for sudoku.