... by: Serban
# 674 H1=4 Basics to 251. Column 2 n=4 e=5 Nc=7 Ns=3 => D2=7 solve
Note: H2=2
2. Box 3 ABC123 n=3 e=6 Nc=10 Ns=3 => H3=6 & [G3=1 OR J2=5] solve
3. Number 2 n=3 e=6 N=21 Nc=13 Ns=12 => B3 & [D4 OR E1]=2 solve
Note: H2=2
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#674, November 29 - December 5, 2025:
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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). |
Archive
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.Share and Enjoy
Supporter Members have access to all these puzzles going back to number 1.
Discussion...
Post an idea here...Saturday 29-Nov-2025
1. Column 2 n=4 e=5 Nc=7 Ns=3 => D2=7 solve
Note: H2=2
2. Box 3 ABC123 n=3 e=6 Nc=10 Ns=3 => H3=6 & [G3=1 OR J2=5] solve
3. Number 2 n=3 e=6 N=21 Nc=13 Ns=12 => B3 & [D4 OR E1]=2 solve
Note: H2=2