Sudoku. Tutorial 63 The X Wing. Part 2 Using columns.

#SudokuGuy #sudoku http://www.sudokuguy.com
This is solved from the beginning to end. so it is valuable for all players of diffent skill levels. The X wing spotting starts at at about 10 min 35 secs.
This a a detailed lesson to show you how to spot and X wing and what to do when hou have found it.
There is lots to learn, so have fun learning the different ways of spotting an X wing.
There are many techniques covered and if you are looking for other tutorials and lessons which cover certain tricks you would like to learn, go to my web site (above) and scroll down to index of techniques. You can also find other videos by looking at the list of videos when you go to the channel page https://www.youtube.com/sudokuguy Click on a playlist of your choice and on the right hand side you will see a list of videos with their topics.
Techniques, tricks and procedures used in this video:
TMB Lesson 1
LCR lesson 2
Snyder Notation lesson 4
2 empty cells lesson 3
Cross/meet Lesson 7
Matching pairs lesson 8, 11 14 elimination of other numbers.
Matching pair+1 matching pair +2 tutorial 5 and 6.
Solving 4 or more empty cells Lesson 12 Tutorial 40 and 41.
X wing lesson 21 Tutorial 62 63
NB to see an index of all the techniques used by Sudoku Guy go to http://www.sudokuguy.com and scroll down.
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Видео Sudoku. Tutorial 63 The X Wing. Part 2 Using columns. канала Sudoku Guy