Less than 1 percent of people surveyed got a perfect score on this free online color perception test. Take it to see where you rank.
In this Christmas hidden object brainteaser, Hungarian artist Dudolf has concealed a single sheep amid a flock of Santas.
To prepare yourself for the mess you’ll find after making ham, latkes, or figgy pudding, check out this holiday hidden-image puzzle.
You'll need some serious owl eyes to solve this hidden image brainteaser by Gergely “Dudolf” Dudás.
‘Jipper’ is hidden somewhere in this letter grid—and you’ll probably find some at Thanksgiving dinner, too.
Spotting jack-o’-lanterns lurking in a 2D haunted house is a lot less messy than carving pumpkins yourself.
Hungarian artist Gergely Dudás specializes in brain-teasing visual puzzles, and his Halloween offering is no exception.
There's a doe hiding in this hidden-image brain teaser puzzle. Can you find it without looking at the solution?
This picnic scene has everything: Sandwiches, tea, fruit, cheese, and one rogue daisy.
Finding the engagement ring in this hidden image puzzle might be easier than finding the perfect time to propose.
Being able to find your actual motorcycle helmet in your own messy garage is a key part of motorcycle safety.
Marriage can often be puzzling, but this brainteaser takes it to another level.
Celebrate 70 years of Queen Elizabeth II with this brainteaser featuring some of her favorite things.
The black hole in this optical illusion isn't really expanding, but your brain might assume otherwise.
Pay attention to the phrasing.
You don't need a ton of algebra knowledge to solve this math problem from MIT's 1876 entrance exam, but it helps.
The short riddle is written in what appears to be plain English, but the longer you stare at it the more confounding it becomes.
There's a turtle swimming through the marine life and plastic waste in this hidden-image puzzle. How fast can you spot it?