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.
... by: Dieter
#684 - initially populated cells: 25 = 30,9 %
No solver used, solver = brain.
basics: C3=1
populated cells: 26 = 32,1 %
Strategy: numbers 1,9,2,4 occur most frequently, combine two cells.
combinations of A6 = (2,4,6,9) and A7 = (2,3,4,6)
after basic checks 4 matrices left: A6/A7 = 2/4, 2/6, 9/2 and 9/4
A6/A7 = 2/4 solves with H8=7
Optimization:
A6=2 & H8=7 solve.
... by: Yves
correction instead of F1=5 you must read G1=5
... by: Yves
B4=6 or D6=7 (Serban) ... For the fun we can add F1=5 or G4=7
... by: Serban
# 684 C3=1 Basics 26
1. D7=3 solve
2. B4=6 solve
3. D6=7 solve
