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.
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... by: Dieter
#682 - initially populated cells: 24 = 29,6 %
No solver used, solver = brain.
basics: D8=7; A5=8; J5=2
populated cells: 27 = 33,3 %
Strategy: numbers 7,5,8 occur most frequently, combine two cells.
combinations of G1 = (2,3,4,6,8) and G7 = (1,4,6,8)
G1/G7 = 2/1 solves.
... by: Yves
#683
Two one-Cell Solution
A9=9 or D9=1
... by: Serban
# 682 A5=8 D8=7 J5=2 Basics 27
1. Number 8 n=4 e=5 N=14 Nc=5 Ns=1 => F7=8 OR G9=8 solve
Note :B8=D1=H3=8
2. A1=3 solve
3. Number 4 n=3 e=6 N=22 Nc=23 Ns=8 => H2=4 solve
