Solve online in CtC-app (thx Nick Smirnov!)
Solution code: Column 5.
on 30. October 2022, 07:16 by Richard
Added link and tag for online solving. Thx Nick Smirnov!
on 15. October 2022, 10:52 by Nick Smirnov
CtC-app:
https://tinyurl.com/57atdwre
on 25. August 2021, 21:27 by uvo_mod
Label ergänzt.
on 22. December 2010, 22:45 by Oliver Strauß
Very nice puzzle with a "think-around-a-corner" way of solution.
on 24. May 2009, 19:00 by Rollo
Z.B. die Weißen 9 Felder in den Zeilen 2, 3 und 4. Das gibt es noch drei mal, und dann bleiben 9 Felder übrig (die Ecken und Mitten in den 1, 5 und 9), die bilden das fünfte versteckte Gebiet.
on 24. May 2009, 12:50 by flaemmchen
Ich frage mich immer noch, wo die 5 versteckten Bereiche sind ... ??
on 24. May 2009, 05:56 by Realshaggy
Nice, but not that easy for me, even with the hint. Took me quite some time. The mentioned extra regions give global conditions in such a way, that the next step may indeed be a simple Sudoku-step like a hidden single or hidden pair, but at very unusual places.