Modder on the Dancefloor
(Published on 15. November 2025, 01:00 by Sotehr)
PUZZLE
Play [Modder on the Dancefloor] on SudokuPad.
RULES
Sudoku: Normal Sudoku rules apply; place the digits 1-9 once in every row, column, and 3x3 box.
Sumdex Lines: The 3x3 box borders divide each line into segments. Each segment's index value is the last digit of its sum and the index value of the Nth segment (starting from the diamond) indicates the segment with index value N.
Modular Mirror: Any pair of cells reflected symmetrically across the negative diagonal (indicated by the dashed line) both contain digits of the same residual mod3, that is they are from the same set of either {1,4,7}, {2,5,8} or {3,6,9}.
Sumdex Lines: The 3x3 box borders divide each line into segments. Each segment's index value is the last digit of its sum and the index value of the Nth segment (starting from the diamond) indicates the segment with index value N.
Modular Mirror: Any pair of cells reflected symmetrically across the negative diagonal (indicated by the dashed line) both contain digits of the same residual mod3, that is they are from the same set of either {1,4,7}, {2,5,8} or {3,6,9}.
NOTES
Expected Difficulty: 4 stars
Solution code: Box 1, normal reading order.
Last changed on on 19. November 2025, 01:41
Solved by Marshal on Mars, vitaminz, Clara123, SKORP17, mahdiosm, bansalsaab, mezeji, aqjhs, ThePedallingPianist, ChinStrap, tuturitu, Scojo, Luaryo, lmdemasi
Comments
on 17. November 2025, 01:48 by ThePedallingPianist
Really cool deductions throughout this one, loved it!
on 15. November 2025, 18:29 by mezeji
sumdex lines are new for me.
great puzzle
