Brain teasers come in all shapes and sizes, catering to different interests and age groups. Here are a few examples: ...

The total value is represented by the digits in the tens and ones places of the number in column 3. This puzzle originally appeared in Spektrum der Wissenschaft and was reproduced with permission.

Think you have a high IQ? Only the sharpest minds can solve this challenging matchstick puzzle in under 7 seconds! This ...

September/1892024/equation-feat.jpg" width="1200" height="675" /> Brainteasers are more than just puzzles; they're mental ...