Are you confident in your observation skills and quick thinking? Let’s put that to the test, with a fun brain teaser that will challenge your visual perception and speed. This optical illusion isn’t ...

One kind of brainteaser that assesses a reader's ability to think critically and solve problems is a math challenge. It's possible that these obstacles will increase concentration and intelligence.

In 2023, I posed 23 challenges as part of the Gizmodo Monday Puzzle series. Some require a bit of math, and others a light familiarity with physics; but most can be solved through logic and creative ...