Geometric arrangements of coins can serve as the basis for all sorts of puzzles. One popular variant involves going from one configuration to another by sliding coins, subject to given constraints, ...

Brain teasers are puzzles specifically designed to challenge your thinking and problem-solving skills. These puzzles often require logical and creative approaches to finding the solution. This ...

Place four coins on the bottom row of circles (G, D, E, and R), leaving the letters MARTIN exposed. Your challenge is to slide the coins along the paths joining the circles so that the four coins ...

It's the first brain teaser in our brand-new series! Finding the solution will take some mental muscle, but you're up for the challenge. Reading time 2 minutes Welcome to the first Gizmodo Monday ...