The following is adapted from the introduction to “The Riddler: Fantastic Puzzles from FiveThirtyEight,” published by W. W. Norton & Co. It is in stores today! The world’s oldest collection of math ...

In a remarkable development, a human mathematician has achieved what many thought impossible: solving the centuries-old ...

How a centuries-old math puzzle helped us see inside the human brain. By Steven Strogatz Photo illustrations by Jens Mortensen Each installment of “Math, Revealed” starts with an object, uncovers the ...

Martin Gardner’s Mathematical Games column in Scientific American fascinated and mystified readers for decades—and his legacy continues to bring mathematicians, artists and puzzlers together. Gardner ...