The Sudoku Swordfish: An X Wing Variant with a 3x3 Rectangle
23:07
Solving a Medium Level Sudoku Puzzle: X Wings, Locked Candidates, and Matching Pairs
16:57
Sudoku Tricks: The X-Wing And How To Spot It
9:17
The XY Wing a.k.a. the Y Wing: A Useful Sudoku Solving Technique When You Are STUCK !!!
24:25
Swordfish Caught and Eaten! / Sudoku Tutorial #12
29:19
Solving a Hard Level Sudoku Puzzle with Skyscraper Swordfish AND Forced Chains!!!
15:56
Sudoku. Lesson 23. Review. The swordfish pattern
14:18
Empty Rectangle and the LOGIC Behind It
8:27