A brain teaser is a short, playful puzzle designed to make your mind stretch and smile. It could be a riddle, a tricky question, a visual illusion, or a logic twist that nudges you to think beyond the ...

Lizabeth Ault plays the puzzle with puzzlemaster Will Shortz and NPR's Lulu Garcia-Navarro. Sunday Puzzle: The Odd Word Out On-air challenge: I'm going to give four words. Three of them have something ...

Optical illusion puzzles have been fascinating and an engaging activity that have captured the interest of people for centuries. These puzzles are famous because they reveal how the brain processes ...