A Step Out of Line (with sujoyku)
(Published on 13. October 2025, 06:00 by Sotehr)
PUZZLE
RULES
Sudoku: Normal Sudoku rules apply; place the digits 1-9 once in every row, column, and 3x3 box.
Periodic Sums: A clue outside the grid indicates the sum of the first cell seen in its row or column and every Nth cell after, where N is the digit in the first cell. For example if r9c4 is a 3, then the digits in r9c4, r6c4, and r3c4 must sum to 10.
Region Sum Lines: Blue lines are divided by 3x3 box borders into segments with the same sum. (Different lines may have different sums.)
Periodic Sums: A clue outside the grid indicates the sum of the first cell seen in its row or column and every Nth cell after, where N is the digit in the first cell. For example if r9c4 is a 3, then the digits in r9c4, r6c4, and r3c4 must sum to 10.
Region Sum Lines: Blue lines are divided by 3x3 box borders into segments with the same sum. (Different lines may have different sums.)
NOTES
Expected Difficulty: 3 stars
This is my latest collaboration with sujoyku using Periodic Sums. We wish you happy solving!
Play [A Step Out of Line] on SudokuPad.This is my latest collaboration with sujoyku using Periodic Sums. We wish you happy solving!
Solution code: Row 6, normal reading order.
Last changed on -
Solved by Piff, NorthCoastAsher, Exigus, MSDOS, jalebc, tuturitu, sujoyku, Myfyr MJ, Wahaj, totem_mapr, Maximus, SKORP17, DanishDynamite, cryptique, brandorando, Aaravos18, chinesemaster, Gilliatt, marcmees, ... ATBlanchard, littlebluue, flyjim, dkfan9, karlmortenlunna, TVDK, Silentdodo, b413x, godoffours, abed hawila, dzamie, katze, dublaypt, Nagesh, mathpesto, sorryimLate, Lizzy01, Voidslime, aqjhs
Comments
on 22. October 2025, 19:29 by Voidslime
What a fun and interesting puzzle! There was one step in the middle that almost made me give up but I’m very glad i didn’t because it felt so good to find the clean logic to break through it. Honestly the entire rest of the puzzle felt like 1.5 difficulty to me but that difficult crux brought it all the way to 3
on 14. October 2025, 00:32 by johnreid
Very fun and an interesting combination of constraints. Thanks!
on 13. October 2025, 13:06 by Myfyr MJ
That was a very nice puzzle but it was very hard for me. Had to bifurcate a couple of times unfortunately. Thanks.
on 13. October 2025, 12:59 by sujoyku
Thank you for this wonderful collab, Sotehr!
