Here’s a simple number game to play on a rainy day, or while sheltering in place. You and I take turns crossing out numbers from the list {1, 2, 3, …, 9}. The winner is the last person to cross out a ...

This article shares a viral missing number puzzle that tests your brain. Try to solve it first, then check the answer we have ...

On one level, sudoku is a simple and fun way to pass the time and keep the brain ticking – but dig deeper, and some ...

Brain teasers are a fun way to test one's thinking skills. These puzzles give the brain a quick workout. A recent challenge that went viral online has math lovers excited. The puzzle asks users to ...