Lines Under the Boxy Fog
(Eingestellt am 19. Januar 2026, 10:00 Uhr von FIT7Y)
Rules:
Place the digits 1-9 once each into every row, column, and 3x3 box.
The grid is partially covered in fog. Fog can only be cleared by correctly placing all nine digits in a 3x3 box, which will clear the fog from that box.
If two digits are separated by a black dot, one digit is double the other.
The following clues must satisfy each of the following conditions. Lines travel orthogonally through the grid (never diagonally), without branching or intersecting any line (including itself). Every line must be contained in exactly three boxes and cross exactly two 3x3 box borders. Excluding the single line decorated with squares, no line can be the same length as another line.
Thermometer:
Digits along a Thermometer increase moving away from the bulb.
German Whisper:
Adjacent digits along a (green) German Whisper line differ by at least 5.
Parity:
Adjacent digits along a (red) Parity line must have different even/odd parity.
Region Sum:
Box borders divide (blue) Region Sum lines into segments which each have the same sum. Different Region Sum lines may have different sums.
Same Difference:
Every pair of adjacent digits along a (yellow) Same Difference line has the same difference. Different Same Difference lines may have different differences.
Have fun solving!
Lösungscode: Row 9
Kommentare
Heute, 19:13 Uhr von Voidslime
Very nice and fun! I love how you use the fog. It’s nice to know when fog will clear but in a fresh less revealing way that classic fog
Heute, 15:04 Uhr von Debba
awesome puzzle thanks for setting!
Gestern, 17:15 Uhr von maenmallah
Amazing puzzle and deductions. Very beautiful interactions between the lines
am 20. Januar 2026, 11:33 Uhr von Snookerfan
Very nice! Thanks
am 20. Januar 2026, 02:06 Uhr von Exigus
Very interesting how far you can reduce thing. Lovely puzzle. Thanks!
am 19. Januar 2026, 20:39 Uhr von Rockon101000
Absolutely loved it! Probably 2.5 difficulty for me, But figuring out where each line had to go, even when I could see only a few cells of it, was really nice and solved smoothly. Took me 50 minutes. Thank you for the excellent puzzle.
am 19. Januar 2026, 20:23 Uhr von Pairot
Beautiful puzzle. The last line was tricky!
am 19. Januar 2026, 16:19 Uhr von SennyK
Such a lovely puzzle, you have managed to include so many clever deductions in just one puzzle, hats off! Thank you very much for sharing :-)
am 19. Januar 2026, 16:08 Uhr von WvdWest
Very nice puzzle. Not as hard as it seems at first glance.
am 19. Januar 2026, 14:51 Uhr von raj64107
nice interplay between the lines and the length of the lines. I was stuck in the last line as I couldn't see a way fowrward without doing some level of back tracking
am 19. Januar 2026, 11:13 Uhr von Elliott810
Beautiful puzzle! Thank you:)
