Sudoku tutorial #67 The XY wing and Y wing. Are they the same?
![](https://i.ytimg.com/vi/8_7ZtxcY8Uc/mqdefault.jpg)
10:18
Tutorial #68 Strong and Weak links and Open Ended Chains, which enable you to remove small numbers.
![](https://i.ytimg.com/vi/WB1KhH1wtM8/mqdefault.jpg)
50:47
Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.
![](https://i.ytimg.com/vi/td0FrO9tzj8/mqdefault.jpg)
27:54
The Best Way To Understand The Sudoku Y-Wing Technique
![](https://i.ytimg.com/vi/3-fcyXnn_uA/mqdefault.jpg)
20:58
The Powerful XY-Wing! / Sudoku Tutorial #23
![](https://i.ytimg.com/vi/RsO2rxKoRHw/mqdefault.jpg)
26:04
Tutorial #50 Solving a hard puzzle from the beginning to the end
![](https://i.ytimg.com/vi/pE3Z_CvFFME/mqdefault.jpg)
9:58
Best XY-Wing Video Ever! Sudoku Advanced Tutorial 16
![](https://i.ytimg.com/vi/i6fV9SmnOhY/mqdefault.jpg)
26:02
Tutorial #87. Beginners Delight. A difficult puzzle made easy
![](https://i.ytimg.com/vi/-9mcNBTDswk/mqdefault.jpg)
10:15