Quattroquadri: Put the digits 1 to 9 into each box such that no digit repeats in any row or column.
Renban: Numbers on a purple line form a set of non-repeating consecutive numbers in any order. Note that the line crossing boxes 3 and 4 is one big renban.
X-Sums: A number on a renban line outside the grid gives the sum of the first X digits from that direction where X is the digit next to the number.
Links:
SudokuPad: https://sudokupad.app/38qddzk7b4
Solution code: Row 1, left to right, then column 1, top to bottom (12 digits).
on 9. July 2025, 09:02 by juggler
Cute!
on 24. June 2025, 01:23 by damasosos92
Wow! What a gorgeous idea.
on 23. March 2025, 20:41 by Fra314
Lovely, good fun!
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