Alex Bellos

The following is a note from the publisher: So You Think You’ve Got Problems? was previously published in the United Kingdom under the title Perilous Problems for Puzzle Lovers.

In Perilous Problems for Puzzle Lovers, Alex Bellos compiles 125 of the world’s most difficult puzzles, many of which are perilous to your physical well-being and all of which are deadly to your ego. Prepare to struggle with language, wrestle with geometry, and scramble for survival as you embark on this journey. As an illustration…

Ten lions and a sheep are kept together in a pen for protection. Each and every lion that consumes the sheep will fall asleep. A sleeping lion will be devoured by another sleeping lion, which will then fall asleep. What would happen if all of the lions were perfect logicians?

So you’ll encounter Alcuin, Sam Loyd, and other puzzle masters of old—in between mad despots and wily jailers with an uncontrollable appetite for riddles—in between deranged despots and wily jailers with an uncontrollable appetite for riddles. Are you going to make it out alive? What about the sheep, you ask?