Oliver Roeder

The Riddler, a weekly column by Oliver Roeder, features some of the most challenging puzzles available on the internet. Presenting the most popular questions from Nate Silver’s FiveThirtyEight, this first-ever collection includes six never-before-published puzzles, all of which explore the mathematics underlying in everyday occurrences and are presented by Nate Silver’s FiveThirtyEight. The simplest requires only a brief flash of insight, while the most difficult require extensive study and probability theory applications to succeed. The Riddler is a must-have for any math or puzzle fan because it is designed to appeal to a wide variety of ability levels.