Tutorial #82 Sudoku. An Unbelievable Technique. (locked little numbers)

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This tutorial is a very valuable one for all beginners to advanced.players.
Most of the tricks I show you will be included in the next tutorial #83 as I solve a diabolical puzzle from beginning to end.

Below is a schedule for all to choose from based on your knowledge and experience.
00:00 Introduction announcements. etc.
02:02 different ways of using "matching pairs" Locked little numbers.
12:10 Different ways of using triplets (3X3) and quadruplets. (4X4) locked little numbers.
25:23 Rules of exclusion. Locked little numbers in a block leading to other eliminations.

Thanks for looking at the SHOW MORE below the video and if you learnt something from this tutorial please give me a thumbs up below the video

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