The place for mathematical puzzles and the puzzling community. Two new puzzles every Friday morning!
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 173 | Founded | 3 years ago | Last Issue | 7 days ago |
| Active | |||||
Read this Newsletter
thefiddler.substack.comLatest Issues
Seeking Alpha
How many ways can you arrange some letters, as well as the connections between them, in a square?
Welcome to Fiddler on the Proof! Every Friday morning, I present mathematical puzzles intended to challenge and delight you. Most can be solv...
Can You Design a Quadrangular Logo?
Pick a random point inside an equilateral triangle. What’s the expected area of a quadrilateral whose four vertices are the corners of the triangle and the random point inside it?
Welcome to Fiddler on the Proof! Every Friday morning, I pr...
Can You Gerrymander Like a Dummy?
You’re gerrymandering a map on behalf of your political party. What are the chances that your party’s greed will backfire?
Welcome to Fiddler on the Proof! Every Friday morning, I present mathematical puzzles intended to challenge and deli...
How Fast Can You Surf?
A surfer is riding a big wave, when a smaller, faster wave hits from the opposite direction. How fast does the resulting “combined” wave travel?
Welcome to Fiddler on the Proof! Every Friday morning, I present mathematical puzzles intended...
Can You Swim With the Fishes?
You’re tracking the speeds of some fish swimming across a koi pond. What average speed do you measure?
Welcome to Fiddler on the Proof, the spiritual successor to FiveThirtyEight’s The Riddler column.
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Fiddler on the Proof.
| Subscribers | Engagement | 74 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
Chart Rankings
How this newsletter ranks in the official Substack charts.
| #108 | |
| #98 |
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.