Immanuel was on his way out the door to visit an old friend across the village when he realized that his grandfather clock had stopped and no longer displayed the correct time. This was the only clock in his home ...

You have a 5-gallon bucket, a 3-gallon bucket, and a water faucet. How can you accurately put four gallons of water into the 5-gallon bucket?

You are a prisoner in a strange land. You have been sentenced to death but are being given one chance to live. The king of the land has decided to let you play a simple game to determine your fate ...

A man is imprisoned in a ten-foot by ten-foot by ten-foot room. The walls are made of concrete, the floor is made out of dirt, and the only openings are a locked door and a skylight ...

You have a delicious round birthday cake. How many equal-sized pieces can you cut the cake into by making only three straight slices with a knife and without moving any of the pieces?