Jonathan Hancock is an experienced writer and puzzle creator, with many trade publications to his name, including Codebreakers and How to Be a Genius for children, and Number Training Your Brain and Memory Power for adults. As a BBC presenter and producer, Jonathan wrote daily puzzles for radio. He also spent five years as a brain-training columnist for Reader’s Digest magazine and was the question writer and memory consultant for all six series of Channel 4’s “Child Genius.” A long-time fan of cryptic crosswords, escape rooms, and mental challenges of all kinds, Jonathan is currently a staff writer for the learning provider Mindtools, where he has written how-to articles on puzzle solving and lateral thinking, and created the online escape game “The Lost Labyrinth.”