Circuit Board
(Published on 6. August 2021, 01:00 by XeonRisq)
- Normal Sudoku rules apply.
- If a number appears as the Xth cell from one end of a palindrome, it must also appear as the Xth cell from the other end.
- Cells with grey circles must contain odd numbers.
- Cells with grey squares must contain even numbers.
- Numbers that appear in the cells between a difference constraint must have a difference of 1.
- Not all dots are given.
- F-puzzles link - link to solve online
Acknowledgements: Special thanks to Sktx for test solving/feedback.
Solution code: Row 5 followed by Column 9
Comments
on 1. March 2026, 09:49 by snuuba
Ditto for what koba1917 said :) I had a hunch what the break-in would be, but it took quite a long time to spot where to start my coloring. Once the spot was found then it was smooth path to the end. Many thanks for excellent puzzle.
Ctc link with solution check:
https://sudokupad.app/c3fukuf53g
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The symmetry in this one was fun, and does pose an initial problem on where to start, but glad you found your way and enjoyed your path to the solution..
on 8. August 2021, 20:26 by Prutsbeest
Very nice puzzle, flows smoothly after the break-in.
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Always appreciate the feedback and thanks for taking the time to give my puzzle a try.
on 6. August 2021, 23:02 by koba1917
Wow, this is so good! Took me forever to figure out how to break in, but once I did it was smooth sailing.
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Thanks koba. Appreciate you sticking with the puzzle, and I hope after break-in the solve became enjoyable, as well as rewarding.
on 6. August 2021, 16:49 by Playmaker6174
I really love this puzzle, very satisfying and also not hard at all, I can say that this one shocked me :)
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Thanks Playmaker, appreciate your feedback and kind words. It's always nice to hear that solvers enjoyed your puzzle.
on 6. August 2021, 14:47 by XeonRisq
@Ragna, @cdwg2000, @Elliot810:
Appreciate the compliments, thanks for solving and glad it was enjoyable.
on 6. August 2021, 10:38 by Elliott810
phantastic puzzle thx
on 6. August 2021, 05:12 by cdwg2000
Very nice!
on 6. August 2021, 04:02 by Ragna
Nice and tricky one! Thank you. :-))
