Mirrory X-mas!
(Published on 24. December 2025, 13:08 by Arlo Lipof)
Rules:
- Sudoku. Place the digits 1-9 once each in every row, column and 3x3 box.
- Main diagonals. Digits cannot repeat on the two marked diagonals.
- Killer Cages. Digits in cages sum to the given total.
- Little Killers. Clues outside the grid give the sum of the digits along the indicated diagonal; digits may repeat on this diagonal if allowed by other rules.
- Mirrors. Both main diagonals are parity mirrors and cage mirrors, i.e.:
- Any pair of cells reflected across those lines contain digits of the same parity (both even or both odd).
- Every killer cage is reflected across those lines to a cage with the same sum (but the digits within a reflected cage are not necessarily identical to the original ones).
Link: SudokuPad
Merry Christmas!
Solution code: Column 8
Solved by Deckatron, Majesteit, dade, MeanoPenquino, jalebc, Pairot, Mozart40, SKORP17, HenryG6-8128, cmigas, maniacaljackal, thomamas, Mystery, metacom, Dermerlin, johnreid, Avron, milxqueen, tetchytomcat, ... abadx, ott.tech, sorhead, Counterfeitly, brimmy, drmegadude, ManniMensen, doomedmageknight, kangaroo, drf93, Onyx, Elizy, phs, AtoriM, sortofrican90, Rüdiger, Photyne, Frank Puzzles, oezi
Comments
on 28. December 2025, 19:25 by VitP
would qualify as a hard level 1, except that sorting out the 15 cages (the critical step in the early middle game) is hard enough to put it into level 2 range
on 27. December 2025, 23:35 by Arlo Lipof
Thank you very much for all your nice comments!
on 25. December 2025, 16:56 by sparkymanu
Not too easy for me and very satisfying symetry! :D
Thank you so much for sharing !
on 24. December 2025, 16:40 by Pairot
Great puzzle!
on 24. December 2025, 16:20 by philolologue
Beautiful! 24 min for me!
on 24. December 2025, 13:49 by Deckatron
I appreciated the 5 cage being there to make sure I understood the rules correctly!
