38:34

The Proof Sudoku Can Improve Your Mood

1:22:34

The Phistomefel Meta Conundrum

1:19:21

The Sudoku With Just 2 Digits And A Small Hat?!

24:09

The bubble that breaks maths.

53:13

Is This Sudoku Impossible?

56:53

This is a PERFECT sudoku puzzle.

1:31:51

The Phistomefel Movie

2:45:04

"One Of The Best Puzzles I Ever Solved": WARNING: VERY Hard!