Sudoku: Normal Sudoku rules apply.
Kropki: Digits in cells separated by a black dot have a 1:2 ratio.
Killer: Digits do not repeat in cages, and sum to the small clue in the top left corner if given.
Thermo: Digits along a thermometer must increase from the bulb to the tip.
Dutch Whispers: Along orange lines, digits must differ from their neighbors by at least 4.
German Whispers: Along green lines, digits must differ from their neighbors by at least 5.
Parity: Along a red line, adjacent digits must alternate between odd and even.
Constraint Regions: Each constraint type may contain no repeated digits anywhere in the puzzle. E.g. If one Thermo contains a 5, then no other Thermo may contain a 5 etc.
Fog of War: The grid is partially covered in fog. Correctly placing digits will clear the fog around that cell. No guessing is required.
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Previous Constraint Region Puzzles |
Regional Constraints |
Foggy Regional Constraints |
The Helpful Quad |
Lösungscode: Column 5
am 7. Juni 2025, 21:38 Uhr von saxdaddyj
Wonderful puzzle. Thanks!
am 22. Mai 2025, 17:17 Uhr von PinkNickels
Beautiful setting. Bravo.
am 21. Mai 2025, 08:48 Uhr von Lovejoy
Delighted to see - given they number of solvers - that I'm not the only one who had you on my favourite setters list
am 18. Mai 2025, 23:11 Uhr von matthewrtims
The trickiest part was the break-in. The rest was pretty straightforward as long as you kept track of details. And very enjoyable :)
am 18. Mai 2025, 01:21 Uhr von JoeyJoeJoe
00:38:57 for me Well done on having 12941 solve on Sven's sudoku pad - that is the most popular I have ever seen.
am 16. Mai 2025, 10:05 Uhr von Stingrayy
Ok puzzle, but very strong use of dynamic fog. So not really solving a sudoku but rather tracing the one solving path.
am 16. Mai 2025, 09:56 Uhr von SirRanch
Excellent beginner puzzle!! I have solved some of your other regional constraint puzzles and it's always such a pleasure. Thank You
am 16. Mai 2025, 07:24 Uhr von PancakePie
Love this constraint! Wonderful build and beautifully placed. Fun to solve too! Thank you for this gift.
am 14. Mai 2025, 20:13 Uhr von dzamie
Took me a little to get the first digit, but once I did, the rest flowed easily and in a satisfying manner.
am 14. Mai 2025, 20:06 Uhr von jcg5a
One of the most beautiful puzzles I've completed recently. Don't forget about the constraint and it just flows once you get the break in.
am 13. Mai 2025, 15:37 Uhr von Snaques
Very fun puzzle, but to me this is an easy-ish 1*.
am 13. Mai 2025, 14:59 Uhr von Chris4927
Beautiful break in. I love this ruleset!
am 13. Mai 2025, 13:30 Uhr von Kirra
@sicario. I found the rule "the constraint regions rule the most helpful to make progress.
am 13. Mai 2025, 13:30 Uhr von Kirra
@sicario. I found the rule "the constraint regions rule the most helpful to make progress.
am 13. Mai 2025, 13:24 Uhr von Kirra
Stumped me for a bit till a saw the break in thankyou for a most enjoyable puzzle.
am 13. Mai 2025, 03:32 Uhr von Sicario
Completely stumped after a few minutes.
am 13. Mai 2025, 00:05 Uhr von Myfyr MJ
Very nice and a lovely flow.
am 12. Mai 2025, 23:40 Uhr von sujoyku
Lovely approachable puzzle. Thank you, Belamis!