We review the best adult puzzles to buy online from from 3D models, to brain teasers that make you do a double take as you slot the pieces together.

Get ready for brain teaser shenanigans! These fun yet challenging puzzles will keep you entertained and thinking hard.

And if you want a little brain workout for yourself, try these adult brain teasers that will leave you stumped. Get Reader’s Digest’s Read Up newsletter for more brain teasers, humor, travel ...

Dad shares a clever brain teaser meant for his son, challenging everyone to solve it.

A good brain teaser or riddle can provide hours of entertainment for kids and adults. From math puzzles to word teasers, here are the best ones.

Brain Teaser For Adults: This black and white campsite picture is mysterious. You need the brain of an alpha human to find the right number of people. 11 Seconds Left!

Classic Daily Brain Teasers and Crosswords Have a Major Effect on Aging "We hope this will encourage people to consider how they challenge their brain." ...

But this brain teaser has left a lot of adults truly stumped. A man named Peter Flom, who has a PHD in psychometrics, came up with the clever teaser.

BRAIN TEASERS are something which can leave a lot of people stumped - but given some time, many will soon figure them out. How did you find this tricky puzzle - did you struggle?

Dad shares a clever brain teaser meant for his son, challenging everyone to solve it.