The Riddler

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

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Can You Help Dakota Jones Raid The Lost Arc?

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What Are Your Chances Of Winning The U.S. Open?

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A Peaceful (But Not Peaceful) Transition Of Power In Riddler Nation

Edited by Oliver Roeder

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Can You Fool The Bank With Your Counterfeit Bills?

Edited by Oliver Roeder

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Which Billiard Ball Is Rigged?

Edited by Oliver Roeder

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Organize Some Debates! Maximize The Shade!

Edited by Oliver Roeder

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How Many Cars Are On This Circular Train?

Edited by Oliver Roeder

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Can You Escape This Enchanted Maze?

Edited by Oliver Roeder

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Can You Construct The Optimal Tournament?

Edited by Oliver Roeder

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What’s The Optimal Way To Play HORSE?

Edited by Oliver Roeder

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