A version of this puzzle originally appeared in the October 1960 issue of Scientific American. What’s the Most Distant Galaxy ...

Sometimes, the simplest tasks can turn out to be the most complicated. While that’s a frustrating fact of life in general, it does make for some fun brainteasers! Take this “how many squares” puzzle, ...

An engaging digital puzzle that has captured the attention of many is the square-counting challenge, where players are tasked ...

A difficult puzzle where readers must count the number of sheep is pulling the wool over people's eyes. The sleep deprived have used counting sheep as a way of helping them to nod off for decades. And ...

I’m on the road this week. Save for a couple of brief layovers, I’ve been doing a lot of driving. In light of this, I was inspired to feature a puzzle that could be solved without pen and paper. It ...

Picture puzzle challenges test your visual skills. They improve your concentration and problem-solving skills by providing an ...

Wooden counting puzzle online, Chok Wooden Number Puzzle Number Puzzles for Toddlers 2 5 Years Old Educational Learning Toys Number Toys with Puzzle Board Number Blocks Best online ...

If you enjoy brain teasers and visual puzzles, this riddle will surely give your brain muscles a workout and test you sharp sight. Visual puzzles improve your observation skills, test your attention ...

Mathematician gives five or six reasons why parity puzzles are fun. May 2, 2010 — -- In belated recognition of April being Math Awareness Month, my column this May will deal with parity. The ...