Strategies for Number Puzzles of all kinds

#582, February 24 - March 1, 2024:
The Weekly 'Unsolvable' Sudoku Puzzle

by Richard Kröger, guest compiler

WARNING: This is the Weekly 'Unsolvable' Sudoku, rated above 'Extreme'.
This is currently unsolvable by my solver, except perhaps with trial and error strategies.
Using the solver will not help you. (much).


Each week a new 'unsolvable' will be published and the previous will be accessible here from this archive section. If you like very tough puzzles, these are for you.
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Saturday 24-Feb-2024

... by: Serban

# 582 Basics to 22

1. Box 8 DEF789 n=3 e=6 Nc=18 Ns=15 => E8=4 & F9=5 solve
Note : F7=9

2. Box 9 GHJ789 n=3 e=6 Nc=14 Ns=6 => H7=5 & G9=4 solve
Note : J8=2

3. Number 6 n=2 e=7 N=28 Nc=42 Ns=34 J2=C3=E4=6 solve
Note; F1=J2=C3=B7=G8=6
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