NoProblem is a marketplace for problems. Posters get an accurate difficulty score and several independent solutions. Solvers get problems that actually match their level and interests.
Join the waitlistExample: how a problem gets scored and solved
Problem:Find all pairs of primes (p, q) such that p² − 2q² = 1
Difficulty score:6.2 out of 10 — based on average solving time and solver level
Solutions:4 independent write-ups delivered in 90 minutes
Example: how problems get matched
Request:Level: advanced, topic: number theory, 2 hours
Selection:5 problems rated 6–7 out of 10, based on your solving history
Result:4 of 5 solved — profile updated for the next set
How it works
Describe the problem. Write out the problem statement and attach any images you need.
Pay for solutions. Several solvers pick it up at once.
Get your results. Receive several independent solutions, plus the difficulty score.
Tell us what you're after. Level, topic, how much time you want to spend.
Pay for a curated set. The service picks problems that actually fit you.
Solve it and submit your write-up. Based on how long it took you, the service fine-tunes your profile and improves your next set.
Tell us a bit about yourself — we'll email you when NoProblem opens.