Prime Loop
(Published on 10. August 2024, 09:48 by Klausku)
Rules:
- Normal sudoku rules apply. Cages sum to their total, if given, and do not contain repeated digits.
- Draw a looping Region-Sum-Line.
- The loop can move orthogonally or diagonally. Box borders divide the loop into segments that sum to the same total.
- The loop consists only of prime digits and visits every box.
- The loop never travels through cages.
If you like prime-lines, here is another (easy) example:
Prime Lines
Solution code: Row 2
Comments
on 13. October 2024, 08:47 by Klausku
link to solution video added
on 24. August 2024, 01:07 by cybers
What a cool idea! Thanks for the puzzle!
on 14. August 2024, 20:46 by Klausku
Sudoku pad link now with solution
on 12. August 2024, 19:51 by K68
Beautiful puzzle with nice and fresh logic. It took me a while to find the break in, but then the puzzle solved smoothly. Thanks!
on 12. August 2024, 06:56 by pms_headache
Very nice puzzle, but it was a three or four star for me. Worked on it for an hour, until I hit a contradiction. Restarted today more carefully using the accumulated knowledge and finished it in about 40 minutes. Very happy when I finished. Thanks.
on 11. August 2024, 03:43 by mackerel
I struggled with this at quite a few points but glad I stuck with it, very satisfying with some lovely discoveries. Thanks for the puzzle!
on 10. August 2024, 18:22 by Franjo
Really? I am the first person solving this lovely puzzle?! It’s very interesting and quite approachable - 3 stars from me. Thank you very much for creating and sharing.
