I ranked on that once! I was like the 23rd person to do one of the new problems one time. Just about as low as you can rank. It was a fun puzzle but you had to be awake at a funky time to do it.

One of my best memories was in undergrad there was one semester in 2013 where half a dozen of my CS classmates and I competed to try and solve the most Project Euler problems. We had a leaderboard and everything.

I saw first hand how much faster my friend’s Java solutions were than my Python solutions.

Good times.

Are there other similar sites? I remember this one, for bioinformatics

https://rosalind.info/problems/list-view/

After opened https://projecteuler.net/ I got

403 Forbidden Request forbidden by administrative rules.

Note: I didn't know and open this website until now.

There is a somewhat similar idea behind "Ponder This" by IBM https://research.ibm.com/haifa/ponderthis/index.shtml They post a problem every month and in the end post a solution. I used to spend a bit too much time on those.

I solved a few using AWK, fun: https://github.com/ketancmaheshwari/projecteuler

I attribute project euler for instilling the playful enjoyment of writing programs in college while I was studying electrical and computer engineering. I owe my career to it!

I love a good puzzle solving club. Some of my favorites: https://www.themastertheorem.com/ https://en.wikipedia.org/wiki/Perplex_City https://en.wikipedia.org/wiki/MindTrap

Like many others here, Project Euler was foundational in my education and growth as a programmer.

Leonhard Euler himself is an incredible figure and arguably the most prodigious contributor to mathematics throughout history. So much so that people started naming things discovered by him after the next person to have proved them.

https://en.wikipedia.org/wiki/List_of_topics_named_after_Leo...

I learned so much from this site- including that so much education comes from being prompted to ask the right questions.