The Riddler

The Riddler is a weekly set of online puzzles and brain games by FiveThirtyEight.

Latest puzzle Weekly email Riddler book

How Fast Can You Deliver PB&Js? How Many Meerkats Can Survive?

Edited by Oliver Roeder

Filed under The Riddler

What Are The Odds World Cup Teams Play Each Other Twice?

Edited by Oliver Roeder

Filed under The Riddler

The Riddler’s Inaugural Rock-Paper-Scissors Tournament

Edited by Oliver Roeder

Filed under The Riddler

How Many Phones Do You Need To Win HQ Trivia?

Edited by Oliver Roeder

Filed under The Riddler

The Case Of The Smudged Secret Message

Edited by Oliver Roeder

Filed under The Riddler

When Will Your House Collapse? Should You Take A Construction Contract?

Edited by Oliver Roeder

Filed under The Riddler

How Hard Is It To Find A Running Buddy?

Edited by Oliver Roeder

Filed under The Riddler

Pirates, Monkeys And Coconuts — Oh My

Edited by Oliver Roeder

Filed under The Riddler

How Fast Can You Type A Million Letters?

Edited by Oliver Roeder

Filed under The Riddler

How To Cross The Street

Edited by Oliver Roeder

Filed under The Riddler

< Previous Next >