How it works

1. Order the desired number of problems for yourself or for another person
2. Pay the ordered problems safely and easily via PayPal
3. Within 48h, you receive from needaproblem a specially generated link to your e-mail address indicated at PayPal, from which you can call up your problem.
4. As soon as you have solved the problem, you send us the proof to solution(at)needaproblem.com.
5. Your proof will be checked and – if you wish – you will be listed on the list of best problem solvers.