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Book 1. Mysterious Riddles

Have fun solving the mysterious riddles in this book using logic and imagination. Become a real detective, look for clues, use your mind and solve all the mysterious stories!

Book 2. Mysterious Mysteries-2

Humanity has come a long way from the time when it lived in caves to the present day space exploration. Figuring out how to make fire, crossing the seas to discover new lands and peoples, or creating timeless artistic masterpieces like the Mona Lisa would not have been possible without the most important human tool - the mind.

We invite you to dive into the most fascinating stages of human development while training your mind and having fun. How exactly? By helping to solve various riddles of a Neanderthal hunter, an ancient pharaoh, a Celtic druid, Robin Hood, Columbus, several settlers in the Wild West... or even Sherlock Holmes himself.