Normal sudoku rules apply. Standard palindrome, little killer, and kropki (no negative constraint) rules apply. To wit: digits along the palindrome lines must read the same forward and backwards. Numbers outside the grid indicate the sum of the digits on their indicated diagonal. Digits on these diagonals may repeat when otherwise allowed. Neighboring digits marked with a white Kropki dot are consecutive. Neighboring digits marked with a black Kropki dot have a 2 to 1 ratio. Not all dots are given. I think this puzzle is 2 stars out of 5 for difficulty for many solvers. As always, comments welcome. Thanks!
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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 21. March 2024, 02:39 by cozoq
Excellent puzzle
on 10. February 2024, 05:35 by Tingo
Quite fun! Thanks for setting and sharing!
on 3. February 2024, 06:30 by Will Power
Thanks to PDN777 for a very nice puzzle!
on 28. January 2024, 00:07 by ave
Took me quite some time, but I enjoyed it.
Thanks for the puzzle!
** And thanks for the solve!
on 27. January 2024, 15:12 by PDN777
Thank you all for your comments and solves! :-)
on 25. January 2024, 22:05 by keenbowl
Very fun, thanks for setting&sharing!
on 25. January 2024, 17:58 by Phire
very enjoyable puzzle
on 25. January 2024, 15:15 by ark29
Great fun! And stays consistent till the end, it never really fully collapsed
on 25. January 2024, 15:04 by Kekes
Nice and Smooth, thx :)