The Olympiad of Riddles

101 puzzles that will test your mathematical knowledge, observation skills, and quick thinking. What are you waiting for? By Professor10demates, a popular math teacher, who tells how the Encina Castle, in the city of the Three Towers and Two Bridges, welcomes young detectives from around the world to the Math-Detective Olympics.

The Newtonians will need your help to discover the secret hidden behind an ancient device called a cryptex. To do so, you’ll have to join detectives Carlota, Javi, and Valeria and solve all kinds of challenges and puzzles that will put you to the test. But with your cunning and working as a team, nothing will stop you.