Complexity theory remains one of the great unsolved mathematical puzzles. Kenneth Regan is trying to figure it out. Kenneth Regan paused at lunch in New York to glance at incoming texts from top ...

A chess problem that has stumped mathematicians for more than 150 years has finally been cracked. The n-queens problem began as a much simpler puzzle, and was first posed in an 1848 issue of the ...

Ho Math Chess at Home started in 1995 when Frank Ho, a math teacher in Canada, taught his son chess. Mr. Ho became fascinated by the relationship between math and chess and built his franchise to help ...

If you have a few chess sets at home, try the following exercise: Arrange eight queens on a board so that none of them are attacking each other. If you succeed once, can you find a second arrangement?