The XY Wing a.k.a. the Y Wing: A Useful Sudoku Solving Technique When You Are STUCK !!!

Lesson #12: In Lesson 10 and 11 of my "lessons" series, I covered x wings and the swordfish. the XY wing is an extension of both of these Sudoku solving techniques, and the logic is the same. I cover three different examples of the XY wing in this lesson, please pause and rewind until you understand the technique. It will serve you well in solving harder level Sudoku puzzles. Thanks for watching!
Timestamps:
Definition: 00:15
Example 1: 00:52
Example 2: 04:30
Example 3: 06:55