... by: Frans Goosens
#625Combination 2-digits cells
B7=2 ( H9=7 ) Solved,
Total solving time is : 5 sec.
Number of logical steps is : 581
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#625, December 21 - December 27, 2024:
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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). |
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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
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Discussion...
Post an idea here...Friday 27-Dec-2024
Combination 2-digits cells
B7=2 ( H9=7 ) Solved,
Total solving time is : 5 sec.
Number of logical steps is : 581
Sunday 22-Dec-2024
... by: Dieter
#625 - basics: E4=J8=1; G4=4; E9=9; D6=3strategy: try to get hidden pairs or triplets
combinations of A1 / C8 = (3,5,6,7) ( (3,5,6,7)
A1=C8=5 solves
Saturday 21-Dec-2024
... by: Serban
# 625 E4=J8=1 D6=3 E9=9 G4=4 Basics to 301. Number 2 n=2 e=7 N=23 Nc=11 Ns=3 => H3=2 solve
2. Number 3 n=3 e=6 N=18 Nc=6 Ns=4 => G2=3 solve
3. Number 5 n=4 e=5 N=15 Nc=10 Ns=1 => A1=5 solve
Note: D9=5
4. Number 8 n=4 e=5 N=15 Nc=10 Ns=10 => H4=8 solve
Note: B9=8