The World Sudoku Championships start on Monday, with competitors from 31 countries set to spend 28 hours solving the toughest ...

and a substantial knowledge of Sudoku solving techniques. Once you know these Sudoku tips, you will be able to solve even the most challenging puzzle. What are the basic rules of Sudoku?

Applied mathematicians have to find a balance between models that are realistic enough to be useful and simple enough to be ...

(THE CONVERSATION) You can probably think of a time when you’ve used math to solve an everyday problem, such as calculating a tip at a restaurant or determining the square footage of a room. But what ...