Advanced Sudoku: The Finned X Wing
17:31
Diabolical sudoku: Finned X-Wings
16:16
Advanced Sudoku: Spotting The X-Wing
26:33
Extreme Sudoku: The Techniques You NEED To Know
21:41
More Y-Wings and Other Chains
17:42
Sudoku 101: The Swordfish
42:13
"For $35,000 I'd Expect it to be Perfect"
18:22
Advanced Sudoku: Skyscraper = Sashimi Finned X-Wing!
19:52