Phistomefel's Ring: An Intuitive Explanation
11:56
Trying to explain SET (Set Equivalence Theory)
6:08
A Sudoku Secret to Blow Your Mind - Numberphile
11:35
Why Phistomefel's Ring is BRILLIANT and Why it Works
25:08
The Sudoku That Broke The World's Best Solvers
17:55
Sudoku Primer 220 - The 'Phistomefel Observation' and How to Use It
2:02:34
Phistomefel (Setter Spotlight Series)
26:34
Brand New Sudoku Trick You Won't Believe!
10:30