Popped up for Ciro Santilli on April 19th 2026 after solving Project Euler problem 993.
wget -O secret.png https://projecteuler.net/resources/images/bonus_secret_statement.png?1738588439The output of the program is another image of Euler with caption:
so and the final answer must be inferred to be the string:
LeonhardThis section is about official bonus problems of Project Euler.
These sometimes pop up after you solve another problem, and it is not well documented when they show up.
According to their copyright statement, these problems are copyrighted unlike the others, so we can't reproduce them here. But we can give answers I believe.
A partial list can be found at: github.com/igorvanloo/Project-Euler-Explained/tree/main/Bonus%20Problems
This section is about the main problems as opposed to the bonus Project Euler problems.
2026-04-17: display broke after it touched a table lightly. Not sturdy. Replacement of original 400 pounds so not worth it.
2026: decided to find my own go to underwear to buy forever and stop this bullshit.
- generic jail:
- prevent disk write:
Paper: arxiv.org/html/2509.26076v1
Apparently also has human review as part of the process. Newbs. Just require Lean solutions and be done with it... They do address it in a section of the paper "Formal math benchmarks" but still meh. Review must be fully automated, none of that asking humans bullshit.
Required CharacteristicsRequires genuine insight: Not solvable by routine application of known algorithms
Example problem:
There are unlisted articles, also show them or only show them.