"I'm Blown Away"
1:35:47
You CANNOT and MUST NOT Solve This Sudoku
1:27:08
Can You Deduce The Chess Position?
32:55
This One Line Will Astonish You!
1:29:32
My Puzzle Has Fog In It!!
1:37:56
One Of The Most Astonishing Sudokus Ever
26:13
Why don't Jigsaw Puzzles have the correct number of pieces?
1:13:50
The Continuity of Splines
1:02:00