Counting Lines
(Published on 2. September 2026, 21:14 by dleclair)
Normal sudoku rules apply.
If a digit N appears on a constraint, it must appear N times across all instances of that constraint type.
Constraints:
Adjacent digits along an orange line must differ by at least 4.
Along a red line digits must alternate parity (even/odd).
Along a peach line any set of 3 adjacent digits must contain one low (123), one middle (456), and one high (789) digit.
Digits separated by a V sum to 5.
Solve in SudokuPad
Solution code: Row 1
Comments
on 4. September 2026, 17:03 by jackraz
This statement cannot be true: "If a digit N appears on a constraint, it must appear N times across all instances of that constraint type."
ie: I put 9 on a peach line and then there should be part of a peach line in every 3x3 block where the 9 must be placed
What am I missing?
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You'd be correct, if the peach line isn't in every 3x3 block, then 9 couldn't be on it or it would break the rule
on 3. September 2026, 18:58 by Franjo
Thank you very much for creating and sharing this lovely puzzle. Nice setting though some people may have problems with these three line colors (which of course are the usual ones for these constraints).
on 3. September 2026, 16:50 by Niffyjiffy
The line from R6C8 to R7C7 is a slightly different color than either the peach or red lines.
Thoroughly enjoyed the puzzle, thanks very much!
on 3. September 2026, 11:17 by Lithium-Ion
Wonderful puzzle! Great fun to solve. Well done! Would deserve a rating of at least 95%.
on 3. September 2026, 11:01 by Peteronium
What a wonderful puzzle
on 3. September 2026, 10:05 by Peteronium
Digit N constraint cannot be the case for the Vs right?
on 3. September 2026, 00:17 by GeorgeTheToad2
Fantastic that was wonderful
on 2. September 2026, 22:06 by Hrothan
Was there something wrong with the version that was published with German whispers instead of Dutch Whispers?
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Nothing wrong, dutch whispers just constrained it a little less while still giving a unique solve path
on 2. September 2026, 21:27 by Arlo Lipof
That was fun, thanks!
