Repovive

Repovive Math Proof Challenge (Beta): $550 in prizes ⬇️ Hello everyone! Have you ever thought of a Codeforces for math? We’re launching our first math proof challenge on Repovive: five problems and $550 in prizes. Pick a problem and submit your reasoning. If you can’t solve it, a substantive effort can still win a prize. After the deadline, we’ll draw the winners: • $100 grand prize: one winner among those who correctly solve all five. • $40 per problem: one winner among its correct solvers. • Two $20 prizes per problem: two winners among substantive attempts, correct or incorrect. The grand-prize winner receives no other cash prizes. Everyone else can win once per problem. Attempting a problem and solving it also each earn 50 vives. This is a beta release, and we’d love your help improving it. Each useful bug report earns 50 vives. The best bug report also gets a $50 prize. Find a mistake in our math judge and earn $20. If it accepts an incorrect proof or rejects a correct one, send us the submission link and explain the mistake. We’ll review your report and reward the first person to report each distinct, confirmed judging error. Send us what happened and enough detail to investigate. • Starts: September 7, 2026, at 00:00 UTC • Deadline: September 12, 2026, at 00:00 UTC • Join: Repovive Math Thanks for helping us test it. We hope you enjoy the problems!