SudokuWiki.org
Strategies for Popular Number Puzzles
Solvers
Weekly 'Unsolvable'
Puzzles to Play
Apps
Str8ts
Other
#629, January 18 - January 24, 2025:
|
|
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...Sunday 19-Jan-2025
Sunday 19-Jan-2025
... by: James Havard
C6=1 with J3=1 gives a singles solution.Saturday 18-Jan-2025
... by: Dieter
#629 - basics: A9=E4=3; A4=7; A6=E5=9strategy: try to get hidden pairs or triplets
C4 = (1,4,6): C4=6 failed; C4=1 failed with E6=(4,6)
after basic checks 1 matrix (C4=4) left
C4=4 & J3=1 solves
Review: J3=1 solves, C4=4 will be populated with basic operations.
Saturday 18-Jan-2025
... by: Serban
# 629 A9=E4=3 A4=7 A6=E5=9 Basics to 29
1. Row J n=5 e=4 Nc=4 Ns=2 => J3=1 solve
2. Column 4 n=4 e=5 Nc=7 Ns=5 => F4=1 solve
3. Number 5 n=3 e=6 N=19 Nc=9 Ns=9 => G1=C3=5 solve