Sudoku players that have been left frustrated by the latest puzzle they're trying out should turn to the handy X-wing technique. Named after the iconic Star Wars spaceship, the X-wing technique can ...

They baffle, delight, and frustrate millions of people around the world on a daily basis. But even the most dedicated Sudoku-solver might have never spotted this secret pattern. Mathematicians have ...

People who tackle a daily crossword or sudoku puzzle keep their mind alert as well as boost their brain power into old age. After a review of studies on ­mental decline, researchers said most showed ...

An hour spent on crosswords and sudokus burns more calories than are contained in a chocolate chip cookie, brain trainers claim. 25 November 2009 • 6:50am Mental exercises such as puzzles and quizzes ...