Normal sudoku rules apply. Digits along the palindrome lines must read the same forward and backwards. Digits in a quadruple circle must appear in the surrounding cells. Digits on a purple renban line must be consecutive, can be in any order, and must not repeat. I think this puzzle is 2.5 stars out of 5 for difficulty for many solvers. As always, comments welcome!
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Solution code: First row of puzzle, and fourth column of puzzle (read top to bottom). Enter as a string of 18 digits, no spaces.
on 9. July 2022, 00:39 by sacklunch
Excellent puzzle, very enjoyable logic. Thanks for creating it!
** I am so glad you enjoyed!
on 7. July 2022, 08:56 by Chelo
Nice puzzle @PDN777, thank you for setting and sharing. 2 Stars is ok!..
** Thanks for the solve and feedback!
on 7. July 2022, 03:49 by MatthewDonovan
Thanks!
** Thank you!
on 7. July 2022, 03:01 by kikanya
Very fun puzzle, thank you for setting!
** Thanks so much for the solve!
on 6. July 2022, 19:36 by ViKingPrime
Tricky bit of logic there, halfway through; quite an enjoyable puzzle!
** Yes, this puzzle is a bit harder than usual (for me). I'm glad you enjoyed. :-)
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