Let's solve hard sudoku together 🧩 part 19

Channel:
Logic Booster
Subscribers:
330
Published on ● Video Link: https://www.youtube.com/watch?v=j1Ck3AMwCp8


Duration: 0:00
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2

I explain how to solve hard sudoku.

timelapse:

00:00 how to solve hard sudoku - introduction
01:15 candidate numbers in one column
02:02 two pairs in two cells
03:05 obvious numbers
03:53 what if method
04:52 obvious numbers
06:13 X-wing
06:53 obvious numbers
09:13 X-wing
10:39 XY-wing



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