In 1779, the Swiss mathematician Leonhard Euler posed a puzzle that has since become famous: Six army regiments each have six officers of six different ranks. Can the 36 officers be arranged in a 6-by ...

When you get stuck on a fiendishly difficult sudoku, it’s hard not to wonder if the puzzle really has a solution. At another moment, aglow in the triumph of a clever deduction, you might have a ...

Macgamestore.com has announced the release of TikGames’ Sudoku: Latin Squares, a casual game based on the enormously popular number crossword puzzles. The game costs $19.95; a demo is available for ...

An ancient mathematical puzzle that has fascinated mathematicians for centuries has found a new lease of life. The magic square is the basis for Sudoku, pops up in Chinese legend and provides a ...