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Quattroquadri: Toroidal X-Sums

(Published on 9. July 2025, 15:00 by Crusader175)

Rules:

Quattroquadri: Normal Quattroquadri rules apply for the 6x6 grid. Place a digit from 1-9 in each empty cell in the grid such that digits do not repeat in any row, column, or 3x3 box.

Dynamic Fog:The grid is covered in fog. Placing a correct digit in a cell lifts fog from that cell and possibly other clues outside the grid.

Toroidal X-Sums: Clues outside the grid indicate the sum of the first X digits in the corresponding direction, where X is the digit placed in the first cell in that direction. Rows and columns are toroidal, so if X is bigger than 6, the next cell after the 6th cell will be the first cell in the row/column again.
Puzzle Link: SudokuPad

My youtube channel on solving sudoku: Crusader Puzzle

Solution code: Column 2

Last changed on on 9. July 2025, 15:38

Solved by Flinty, Malakree, Fisherman, ananth, maniacaljackal, jalebc, SKORP17, andreatetta, SeveNateNine, Jesper, MaxSmartable, gdc, jkuo7, Calesch, farodin64, jinkela114514, autumnsky544, AKernel, Julianl, kublai, sarabtx, shifman23, SparklePuzzle, ole-1995a, fthompson, schnitzl, jordanza
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Comments

Last changed on 11. July 2025, 15:54

on 11. July 2025, 12:19 by Fisherman
Finally, a setter who made me understand what toroidal means. Thanks.

Reply: Thank you for solving!

Last changed on 11. July 2025, 15:54

on 9. July 2025, 18:12 by andreatetta
Some very nice logic!

Reply: Thank you andreatetta! Glad you liked it!

Difficulty:3
Rating:93 %
Solved:27 times
Observed:1 times
ID:000O5H

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