The place for mathematical puzzles and the puzzling community. Two new puzzles every Friday morning!
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 159 | Founded | 3 years ago | Last Issue | 9 days ago |
| Active | |||||
Read this Newsletter
thefiddler.substack.comLatest Issues
Can You Win the World Cup?
Your team has made it to the semifinals. Should you go all out in your semifinal match, or should you reserve some energy for the finals (in the hopes you make it there)?
Welcome to Fiddler on the Proof, the spiritual successor to FiveThir...
Can You Power up the Hill?
In this year’s edition of the Tour de Fiddler, your task is to find the conditions under which a climber and a sprinter will match speeds.
Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler column.
Can You Fit the Stars on the Flag?
Happy Fourth of July! With stars arranged in a square grid, how many can you fit inside a circle of radius 2? And what’s the smallest circle that contains 58 stars?
Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEigh...
Can You Tile the Hexagon?
My kitchen floor is made up of many equilateral triangles. How many distinct ways can I tile it using rhombuses that are composed of two such triangles?
Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Ridd...
Can You Fix the Random Number Generator?
I suspect that my calculator’s random number generator is malfunctioning. After it produces one number, what can I surmise regarding its behavior?
Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler co...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Fiddler on the Proof.
| Subscribers | Engagement | 76 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
Chart Rankings
How this newsletter ranks in the official Substack charts.
| #91 | |
| #92 |
Authors
The writers behind this newsletter.
Former Puzzle Editor @FiveThirtyEight; VP STEM @Amplify; Co-Founder @SchoolYourself
Frequently Asked Questions
How can I access the email archive for Fiddler on the Proof?
You can find recent issues that have been published by Fiddler on the Proof on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
How many subscribers does Fiddler on the Proof have?
To see how many people subscribe to Fiddler on the Proof, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.
How can I advertise in Fiddler on the Proof?
Newsletter advertising can be extremely effective when it's done right. Before you pitch Fiddler on the Proof as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.
Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.
How much does it cost to sponsor a publication like Fiddler on the Proof?
Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.
To find out how much an ad will cost, contact Fiddler on the Proof using the contact information provided and ask for a copy of their media kit.
How can I find newsletters related to Fiddler on the Proof?
Scroll up to where it says Related Newsletters to see other publications like Fiddler on the Proof. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact Fiddler on the Proof?
Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.