Terrace (Dutch Flatmates + 159 sudoku)
(Published on 24. July 2025, 20:44 by Qodec)
- Sudoku: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
- Even: The cell with the gray square is even.
- Dutch Flatmates: Every 5 must have a 1 directly above it or a 9 directly below it. It may have both, but it doesn't need both.
- 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 is true of column 5 and the digit 5, and column 9 and the digit 9.
- XV pairs: An X between two cells means that the digits in those cells must add up to 10. Not all possible X clues are necessarily given.
You can play this puzzle online using Sudokupad: https://sudokupad.app/bpm965ze9a
Solution code: Column 8. I.e. the 9 digits in column 8 from top to bottom, for example: 123456789
Comments
today, 04:00 by Djirt
Спасибо, очень классное судоку!
on 25. July 2025, 22:19 by Exigus
Nice break-in and a very smooth solve (except where I completely forgot the Dutch flatmates rule). Thanks!
on 25. July 2025, 12:01 by Flinty
Very nice :) Great timing too, as next weeks Dutch Flat Mates from me also has a little bit of column indexing!
on 25. July 2025, 11:29 by marcmees
minimalistic. Very nice solve. Thanks
on 25. July 2025, 10:18 by Piatato
Neat!
on 25. July 2025, 01:05 by damo_89
That was a lot of fun, I found it not too hard as well.
on 24. July 2025, 22:54 by Jolly Rogers
Beautiful construction, I don't tango with many 159 puzzles but the interactions with Dutch flat mates was interesting! Thanks for setting, a satisfying solve.
on 24. July 2025, 21:37 by Playmaker6174
What a nicely crafted puzzle with such an unexpected yet funny turn of event in the middle of the solve!
DFM and indexer 159 really have some funky interactions huh x)
