There's something endlessly entertaining about puzzles of all kinds — from sudoku to brain teasers. Hard riddles allow you to feel challenged, and that moment when something in your brain clicks and ...

888 + 88 + 8 + 8 + 8 = 1,000. This is the kind of math riddle you can work out with times tables, or by simple logic. First, get as close to 1,000 as you can (888). From there, it’s easy to figure out ...

Who says mind-bending logic puzzles are just for kids? We've come up with 20 brand-new riddles for adults to test your critical thinking, mathematics, and logic skills. With difficulties ranging from ...

When you need a vigorous, sweat-inducing brain workout, attempting to solve some hard riddles is a sure way to get those intellectual reps in. Putting your smarts to the test in this way is not for ...