Off-Roading (Quad 159)
(Published on 3. November 2021, 14:22 by tallcat)
Normal Sudoku rules apply
Quadruples: Digits in white circles must be present somewhere in the cells the clue touches.
159: Digits in column 1 indicate the column in which the digit 1 appears in that row (e.g. if r4c1 is a 6, r4c6 is a 1). The same applies to columns 5 and 9, with the digits 5 and 9 respectively.
Can be played online at f-puzzles or CTC
Solution code: Row 2 (left to right) followed by column 3 (top to bottom). 18 digits, no spaces.
Comments
on 19. January 2022, 20:24 by Jeet Sampat
Absolutely stunning logic from start to finish! Thanks for the puzzle, @tallcat. :)
on 11. November 2021, 15:38 by uvo_mod
Labels ergänzt.
on 4. November 2021, 17:38 by PleaseIgnore
Spectacular!! Thank you so much for this puzzle, the first digit felt so rewarding!
on 4. November 2021, 16:27 by clohrmann
I usually struggle with 159 puzzles, but I really enjoyed the way that the quads worked to help guide deductions from the 159 restriction.
on 3. November 2021, 19:58 by tenaliraman
Very enjoyable solve! :-)
on 3. November 2021, 19:53 by glum_hippo
This is a puzzle I definitely did not mind solving twice!
on 3. November 2021, 19:27 by donnystam9
i very much enjoyed this
on 3. November 2021, 15:54 by Playmaker6174
Very smooth and fun puzzle! :)
