Disjoint Groups
Solve online in F-Puzzles (thx Nick Smirnov!)
Place the digits from 1 tot 9 in every row, column and 3x3-block. No digit can appear in the same position in different 3x3-blocks.
Solution code: Row 8, followed by column 7.
on 15. November 2022, 23:29 by Piatato
I was about to write about how happy I was to survive a puzzle with the most disgusting constraint known to man, but of course I failed it. Will try again later!
Edit: happy to get past this one XD
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Reply: Well done, and that's fun to read! I am not so much a fan too of 'global' constraints like this one, where placing a digit in one area influences a possibility in a whole different area. The same for diagonal and windoku. In all cases the focus must be in all directions. I am much more a fan of local constraints, with consecutive, kropki and XV as favorites, beside math oriented variants. :)
on 14. July 2022, 09:47 by Richard
Added link and tag for online solving. Thx Nick!
on 3. December 2020, 01:46 by Nick Smirnov
F-puzzles:
https://f-puzzles.com/?id=y2pyjj9d
on 11. June 2016, 10:20 by ohm0123
Funny. Good.
on 18. November 2014, 12:27 by pin7guin
Wie konstruierst Du nur immer so klasse Rätsel, Richard?!!!
on 18. November 2014, 11:33 by Statistica
It feels a little bit like a jigsaw-sudoku :-)
on 18. November 2014, 11:08 by AnnaTh
Toll! Diese Variation habe ich schon lange nicht mehr gemacht. Hier ist volle Konzentration gefragt.
on 18. November 2014, 09:29 by flaemmchen
Wieder einmal ein leckeres Dienstagmorgen-Frühstück ;-))