Conway Checkers (proof) - Numberphile
8:45
Conway Checkers - Numberphile
38:28
A Miraculous Proof (Ptolemy's Theorem) - Numberphile
17:13
Um avanço no quadrado mágico - Numberphile
28:43
The Notorious Question Six (cracked by Induction) - Numberphile
19:27
How Paul Erdős Cracked This Geometry Problem | The Anning-Erdős Theorem
15:11
The Foundation of Mathematics - Numberphile
11:16
The Game You Can't Win
21:13