21 Sudoku Singles Chain
![](https://i.ytimg.com/vi/wCJsZG2hQqs/mqdefault.jpg)
3:26
22 Sudoku Pairs Chain
![](https://i.ytimg.com/vi/mWQNO2Cl7Z0/mqdefault.jpg)
22:38
The Easy Way To Spot X-Cycles
![](https://i.ytimg.com/vi/gFrAKmDwUzw/mqdefault.jpg)
29:19
Solving a Hard Level Sudoku Puzzle with Skyscraper Swordfish AND Forced Chains!!!
![](https://i.ytimg.com/vi/QgkVz9sdHEs/mqdefault.jpg)
17:53
The Sudoku Trick All Expert Solvers Know
![](https://i.ytimg.com/vi/TIEdN-gH4No/mqdefault.jpg)
42:55
X-Chain (Old Faithful!) / Sudoku Tutorial #27
![](https://i.ytimg.com/vi/rLuF0ZecXaE/mqdefault.jpg)
16:43
Sudoku Mastery: X Wings, Y Wings & XY Chains
![](https://i.ytimg.com/vi/1i_O1FzcssM/mqdefault.jpg)
25:02
Finned & Sashimi X Wings in Plain English! / Tutorial #11
![](https://i.ytimg.com/vi/CDhFzNkDVsE/mqdefault.jpg)
13:26