Lock and Key
(Published on 25. February 2024, 01:15 by AParliamentofOwls)
Normal Sudoku Rules apply. Every row, column and marked region in the puzzle must contain the digits 1-9 at least once.
Additional Rules:
Antiknight: Digits that are a chess knight's move apart may not be identical
Entropy Lines: any three consecutive digits on an orange line must include a low(123), middle(456), and high(789) digit.
Thermo: Digits on thermos rise from the bulb end.
Solution code: row 5 and column 5
Comments
on 3. February 2026, 18:12 by abadx
2* for me. Not difficult but break in is a bit slippery at first glance.
on 7. March 2024, 20:28 by Ganbatte
Such a subtle and satisfying puzzle.
on 26. February 2024, 01:24 by apcostel15
If I didn't forget the knight constraint, this would probably be 1*, but I sat there looking at the puzzle for 10 minutes trying to figure what I was missing!
on 25. February 2024, 18:38 by AParliamentofOwls
changed difficulty from 1* to 2*
on 25. February 2024, 13:23 by ukjohnd
A little trickier than it first appeared, also 2* for me. Very nice interplay between the 3 constraints.
on 25. February 2024, 12:45 by Nostor
Very nice, thank you! Maybe it's just because I'm not very good at spotting the knight constraint, but I'd think it is closer to 2*
on 25. February 2024, 01:18 by AParliamentofOwls
added image and link
