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Sudoku Tutorial #40 A must know technique.

#sudokuguy sudokuguy.com
PLEASE NOTE. This is NOT a real puzzle. Don't try to solve it as a puzzle. It is a demonstration only of a technique

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For frequently asked questions FAQ

When you have 3 or 4 or 5 or 6 or more empty cells in a row column or block this "outside the puzzle" procedure is VERY helpful.

Frequently when solving puzzles there are several paths to take to solve the puzzle. SO MUCH DEPENDS ON WHAT YOU SPOT AND WHEN. In this video there is a 3X3 of 2,3 and 5. which means you can remove all other small numbers of 2,3 and 5 in the rest of the row. This will also help you come up with a correct solution. Thanks to Jim W for pointing this out.
ALSO note that 8 can only go in column 3, because block 3 has an 8, column 5 has an 8 and column 1 has an 8. See lesson 13 "There's only one place it can go"

NEW you can now go to my web site and see an INDEX OF VIDEOS under strategy headings. Clcik on the number and it will take you to the video of interest.

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Видео Sudoku Tutorial #40 A must know technique. канала Sudoku Guy
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27 июля 2018 г. 1:28:49
00:13:41