5X6
(Published on 7. October 2025, 11:00 by Duarte-Carvalho)
The 5 and the 6 are the key to this puzzle so they must not be find on the X (formed by german whispers)
German whispers: adjacent digits on a green line must differ by at least 5.
Renban: purple lines must contain a set of consecutive digits in any order.
Dutch whispers: adjacent digits on an orange line must differ by at least 4.
Region sum lines: 3 x 3 box borders divide blue lines into segments. The values on each segment have the same sum, though this sum can be different for different lines.
Entropic lines: each set of three sequential cells along a peach line must contain a low digit (1, 2 or3), a middle digit (4, 5 or 6), and a high digit (7, 8 or 9).
Parity lines: Along a red line, adjacent digits must alternate between odd and even.
The 5s outside of the grid are Skyscrapers clues.
The 30 outside of the grid is an X-sum clue.
Skyscrapers: skyscrapers are visible when looking from that direction. Digits in the grid represent the heights of the skyscrapers. Taller skyscrapers block the view of any smaller skyscrapers behind them. Clues outside of the grid give the number of skyscrapers visible from that point in that row or column.
X-sums: numbers outside of the grid give the sum of the first X digits along that row or column, where X is the first digit seen from the direction of the clue.
All possible skyscrapers and X-sums with 5, 6 or their product are given.
Solve online here: SudokuPad Puzzle
If you like this puzzle you may enjoy some of my other puzzles too, click HERE to see the other puzzles I have made.
Solution code: The X digits. Digits on the positive diagonal (bottom to top) followed by the digits on the negative diagonal (top to bottom). 18 digits
Comments
on 13. October 2025, 11:27 by FireTruckFuel
Considering it's only used once, the X-sum clue makes the rules quite a bit longer. Several clue types felt like they didn't get enough time in the spotlight and just make the rules unnecessarily long.
on 9. October 2025, 20:37 by VitP
the "all possible ... are given" is not used (hard to use in any case)
on 9. October 2025, 18:44 by minicartel
I agree. Enjoyable, but the solution code is a PITA to submit.
on 9. October 2025, 17:32 by Duarte-Carvalho
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