Japanese temple geometry puzzle
11:51
Impossible Dutchmen's Wives Puzzle
29:42
Why 4d geometry makes me sad
10:21
a geometry problem inspired by Japanese Sangaku
18:14
Could you pass this interview? The famous batteries and flashlight logic puzzle
11:40
Por que o Exército dos EUA escolheu baterias de silício-grafeno
16:57
I Built the World's Biggest Hydrofoil Board
7:47
Mandelbrot's Evil Twin
12:11