Rules
Normal sudoku rules apply.
Digits cannot repeat on the negative diagonal.
Box borders divide each blue line into segments with the same sum.
Along pink lines, digits form a consecutive sequence in any order.
Along green lines, adjacent digits differ by at least 5.
Additionally, digits on lines mirrored by the diagonal form a set of different digits. For example, r4568c7 and r7c4568 are 8 different digits.
Solution code: Column 6
on 27. July 2025, 20:40 by TJ
Got seriously stuck there, took me over an hour to get going again. Definitely 4 stars for me. Thanks for the puzzle!
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ND: Congrats on finishing it!
on 27. July 2025, 15:29 by rdesmarais2
Basic pencil marking and a few digits 3 star. The some 4 star digits then back to 3 star. I thoroughly enjoyed.
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ND: Thanks for solving!
on 27. July 2025, 13:29 by mihel111
Lovely idea. Great puzzle.
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ND: Thanks, glad you enjoyed!
on 27. July 2025, 06:50 by Ramez
I never saw this diagonal mirror before. Is it a totally new rule? A beautiful puzzle as usual. Thank you for setting and sharing this lovely sudoku :)
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ND: You are welcome, Ramez!
I never saw a mirror with extra regions, but parity mirror is fairly common.
Difficulty: | ![]() |
Rating: | 84 % |
Solved: | 26 times |
Observed: | 3 times |
ID: | 000OCO |
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