Perfect Primes Sudoku
Solve online in F-Puzzles (thx bbutrosghali!)
Place the digits from 1 to 9 in every row, column and 3x3-block. A dot means that the two neighbouring digits form a double digit prime number when read from left to right or top to bottom. All possible dots are in the grid.
Solution code: Row 4, followed by column 4.
on 14. July 2022, 17:42 by Richard
Added link and tag for online solving. Thx bbutrosghali!
on 24. May 2021, 10:03 by bbutrosghali
https://f-puzzles.com/?id=yfk888vz
on 26. December 2020, 20:17 by Bankey
Delightful puzzle ! Thanks, Richard !
on 4. September 2017, 10:20 by Eisbär
At last, solved in what I believe was "Take 17" :-D
on 19. May 2017, 22:00 by Danielle
Diesen Spaß durfte ich mir gleich dreimal gönnen. Beim ersten Mal ging es gar nicht auf, beim zweiten Mal ging es auf, aber irgendwo war eine Primzahl ohne Punkt (oder umgekehrt). Nun hat es geklappt. ;-)
on 8. March 2017, 10:47 by ohm0123
It's funny. Great.
on 12. August 2016, 22:40 by Faxi
Super Sudoku! Hat riesig Spass gemacht!
on 9. August 2016, 15:18 by marcmees
mooi exemplaar.
on 9. August 2016, 09:58 by ibag
Das hat Spaß gemacht!