Logic Masters Deutschland e.V.

XY-Differences and -Sums

(Published on 30. April 2021, 06:00 by glum_hippo)

Normal Sudoku rules apply.

The diamonds can represent XY-Differences OR XY-Sums.

If there's a diamond between two vertically adjacent cells, then either the absolute value of their difference or their sum is the same as the topmost digit in that column.

If there's a diamond between two horizontally adjacent cells, then either the absolute value of their difference or their sum is the same as the leftmost digit in that row.

Take note! A negative constraint does apply. If no symbol is given, then neither the sum NOR the difference corresponds to the first cell.

F-puzzles link for the 6x6 example.

ExampleSolution

F-puzzles link for the 9x9 puzzle.

Solution code: Row 8, then column 4 (18 digits total)

Last changed on on 14. September 2021, 16:35

Solved by bigger, Zombie Hunter, MagnusJosefsson, SirWoezel, Jesper, PixelPlucker, NikolaZ, RockyRoer, Statistica, ffricke, Mark Sweep, Mody, Vebby, zorant, Uhu
Full list

Comments

on 30. January 2022, 10:39 by Mody
Wunderschön konstruiert, hat Spaß gemacht.

on 6. August 2021, 08:48 by ffricke
Schöner Einstieg in das Rätsel, starkes Gewicht des "negative constraint"

on 30. April 2021, 19:20 by Zombie Hunter
Very enjoyable. I especially liked that fact that often the most important diamond, wasn't a diamond.

on 30. April 2021, 15:00 by SirWoezel
Really good and challenging puzzle.

Difficulty:4
Rating:98 %
Solved:15 times
Observed:3 times
ID:0005SZ

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