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Fiddler on the Proof

Zach Wissner-Gross
Hundreds of paid subscribers

The place for mathematical puzzles and the puzzling community. Two new puzzles every Friday morning!

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Substack
PricingFreemiumPublishesWeekly
Issues151Founded3 years agoLast Issue4 days ago
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Latest Issues

The Ant Goes Marching

June the hungry ant is traveling across the surface of a cylinder to reach her dinner. How fast can she get there?

Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler column.

4 days ago
6
11
Paid

Can You Play Hide-and-Seek?

My nephew is hiding at one of three possible locations. How efficiently can I find him? (And what if he has a teleporter?)

Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler column.

11 days ago
5
28
Paid

Can You Drink the “Random-ade”?

I’m preparing a mixture of “random-ade” by combining random amounts of ingredients, running out of them, and replacing them with new random amounts. How much can I expect to make on average?

Welcome to Fiddler on the Proof, the spiritual s...

18 days ago
7
20
Paid

Can You Hop Around the Chessboard?

A frog hops around a chessboard in a very particular way. What hopping distance will allow it to return home after four jumps?

Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler column.

25 days ago
7
22
Paid

Will You Be Right on Time?

A clock’s two hands both point to minute markers and the hour hand is 13 markers ahead of the minute hand. What time is it?

Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler column.

a month ago
12
30
Paid

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Authors

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  • Zach Wissner-Gross

    Former Puzzle Editor @FiveThirtyEight; VP STEM @Amplify; Co-Founder @SchoolYourself

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