"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When 2D puzzles are no longer exciting, 3D brain teasers are the way. These handheld puzzles require ...

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 ...

You and a friend have arranged to meet at a popular downtown mall between 3 p.m. and 4 p.m. one afternoon. However, you neglected to specify a time within that one-hour window. Therefore, each of you ...

All the Latest Game Footage and Images from Triz: Sacred Geometry Puzzles Disentangle the color web of mysterious geometric interweaving and discover fascinating hypnotic shapes. Distract from reality ...

There is no new Insights puzzle this month, but I come bearing a holiday gift — a special crossword puzzle for all readers of Quanta Magazine. This crossword is my homage to the wonderful writers and ...

You have a sharp brain if you can solve this math puzzle. Test your problem-solving skills and intelligence now! Math puzzles test readers' critical thinking skills by challenging them to solve ...