Can You See the Parallel Stripes in This Optical Illusion?
This magician's tricky image will make your head spin.
Your cargo of rare fish was washed overboard. Can you figure out how many tanks you need to retrieve?
Cubers solve the puzzles blindfolded, with their feet, on paper—you name it.
This puzzle will make you glad to be out of elementary school.
These logical pirates will divide their booty based on a "yarr"/nay vote.
You have to lick a frog in order to survive. But WHICH frog?
You need to figure out three numbers based on a handful of clues. If you fail, you'll be eaten by mutant salamanders.
Mid-air refueling for the win!
This classic math problem can be maddening.