Twin Killer Sudoku
(Published on 23. January 2009, 10:36 by Richard)
The numbers in the grid are the sum of the digits in the smaller outlined areas. In the smaller areas digits may not repeat. Both grids have the same solution.
Solve online in Penpa+ (thx Nick Smirnov!)
Solution code: Das Gebiet in der Mitte, zeilenweise / the middle 3x3-block from left to right, top to bottom
Comments
on 6. July 2023, 17:39 by DiMono
Took me a while to get the right starting point, but after that everything went very smoothly. Here's a link with answer check: https://tinyurl.com/e6bc95nh
on 9. October 2022, 08:12 by Richard
Added link and tag for online solving. Thx Nick!
on 30. September 2022, 03:15 by Nick Smirnov
Penpa:
https://tinyurl.com/2z7cc98c
on 15. August 2021, 13:52 by uvo_mod
Labels angepasst.
on 12. July 2010, 14:16 by Realshaggy
Changing my vote slightly was enough to reduce it to four stars, so it was very close. It's very difficult to rate puzzles consistent both in difficulty and beauty over the course of two years.
on 12. July 2010, 12:26 by Richard
Hi pokerke,
This is one of the older puzzles, and by the time it was published definitely a five-star puzzle. But the average difficulty of puzzles in the portal has increased, so if it would be published today it wouldn't have been more than three stars...
on 12. July 2010, 12:17 by pokerke
I guess I was lucky to quickly find a good entry point but then the puzzle solved itself very quickly. I was quite surprised that a five star puzzle went so fast. I agree with the rating that it is a great puzzle, but the five star difficulty seems excessive.
on 25. July 2009, 16:48 by Alex
na endlich! woooheeee! Schon tagelang alle Killerdinger angestarrt (grrrrr) und nirgendwo den schlauen Anfang gefunden. Hier dann ganz auf einmal (war schon ein bischen versteckt, oder eher ein Fall von 'man sieht den Wald vor lauter Baeumen nicht').
on 5. June 2009, 23:49 by Realshaggy
Finally managed to find the "easy entry points"!
on 20. May 2009, 19:38 by flaemmchen
@Richard: Ich hoffe, es gibt noch gaaaaanz viele von Deinen tollen Sudokus ... ich warte ... :-)))
on 20. May 2009, 18:09 by Oskama
So, if anybody can tell me where the 'easy entry' is, feel free to do so. Cause I missed it. After that it was quite easy (First ten digits took more than half of the time)
on 19. May 2009, 21:59 by Oskama
@Richard: I also did so right now. So let's see how long this one takes ;-)
on 19. May 2009, 20:50 by Richard
@Sabine: funny to see that you solved the second Twin Killer earlier than this one. I think this one is considerably easier, with two possible ways to get started. ;-)
on 19. May 2009, 19:24 by flaemmchen
Es hat ewig (Tage, Wochen??) gedauert bis ich einen Lösungsansatz hatte, aber dann hat sich plötzlich eine nach der anderen Zahl gezeigt ... Super :-)))
Irgendwo im Forum gab's mal die Diskussion um "schöne Rätsel" - dieses gehört eindeutig dazu!! Danke!
on 30. January 2009, 09:48 by AnnaTh
Now I know why you did not take part in the "Monatsrätsel"!
Great puzzle! Thank you.
on 26. January 2009, 23:35 by ReneB
Een hele fraaie puzzel Richard; mijn complimenten!
on 24. January 2009, 00:26 by pin7guin
Eine wunderbare Herausforderung. Wie sich Stück für Stück ein um die andere Zahl erschließt... Die Komposition dieses Rätsels ist wirklich gelungen!
Herzlichen Dank und: bitte mehr davon :-)
on 23. January 2009, 19:29 by Naphthalin
sehr schönes rätsel! es scheint am anfang unangreifbar, doch wenn man einmal den ersten kratzer getätigt hat, geht es angenehm vorwärts. ich hoffe, du stellst wieder rätsel zur DSM!
