Believe it or not, highway numbers actually make sense. Here's the logic behind odd and even routes, and why the system isn't ...

Tristan and Layla subdue the Great Pumpkin, greater Ozark is saved from the big squash. The post Math Puzzle for October 31, ...

Subscribe to Scientific American to learn and share the most exciting discoveries, innovations and ideas shaping our world today.

You may draw examples from Miguel Secillano, Terence Tao, or even from Shakuntala Devi, all you want – but if getting your ...

Artists aren’t immune to the strip’s allure. M.C. Escher, the famed graphic artist, incorporated the Möbius Strip in his ...

24-Across, [Half of a standard deck of cards], is also hard to guess without a few letters in place; it solves to BLACK SUITS ...

IQ tests present readers with picture puzzles or math problems, and they need to find the solution within a time limit. These simple puzzle games sharpen the brain. By providing an effective workout ...

Support from readers like you keeps The Journal open. You are visiting us because we have something you value. Independent, unbiased news that tells the truth. Advertising revenue goes some way to ...

Mumbai's very own Rohan Udani has achieved a breakthrough for India on the global puzzling stage, qualifying for the ...

We’ve often thought that 3D printers make excellent school projects. No matter what a student’s interests are: art, software, ...

The 35-year-old saga of Kryptos, an enigmatic sculpture containing four encrypted messages outside the CIA headquarters, just ...