*Acertijo* matemático navideño: ¿Cuánto tiempo pasará hasta que todos reciban pastel?
20:41
IMO 2024 Problem 5 - most *TROLL* problem in IMO history?
23:40
IMO 2024 Problem 6 - the *FINAL BOSS* is always tough! Functional equation leaves few survivors
23:12
China Math Olympiad 2025 P5 - *BEAUTIFUL* NUMBER THEORY
14:51
IMO 2024 Problem 2 - If you LOVE *number theory* and HATE *geometry*, it's a field day!
14:51
Another *RIDICULOUS* number theory problem from Korea! Korea Math Olympiad 2023
18:14
Putnam 2024 A4: Hey look! An interesting number theory problem!
15:25
Hardest IMO problem EVER? Only *2* solved
40:10