2020 European Girls Math Olympiad (EGMO) Problem 6
28:48
2017 European Girls Math Olympiad Problem 5
33:23
2017 European Girls Math Olympiad Problem 6
25:08
2018 USAJMO Problem 1
34:17
2020 AIME II Problem 14 (Unnecessarily long :D )
29:29
2021 AIME I Problem 15 -- Algebra of parabolas and circles
59:46
∫ A playlist when math starts to get serious ∫
31:06
2019 Poland Math Olympiad Geometry problem (Symmedian line, Incenter Excenter Lemma, Monge Theorem)
27:44