Why is a river so rich ?
It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?
What do you call a fish without an eye?
You bought me for dinner but never eat me. What am I?
Do you know who was buried in John's tomb?
Find the smallest sentence with all the English alphabet.
What's the only room from which no one can enter or leave
Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?
How can you make a TV, a bed, a dog, and a car liquid?
What always comes into a house through the keyhole?
What is the centre of gravity?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
