One of the most paradoxical and powerful ideas in chess is Zugzwang. This term of German origin literally means "compulsion to move", where Zug means 'move' and Zwang means 'compulsion' It describes a ...

The World Chess Championship is heading toward a dramatic conclusion on Wednesday, which could give the U.S. its first champion since Bobby Fischer took the crown in 1972. The players will embark on a ...

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 ...