Logic Masters Deutschland e.V.

Sudoku Variants Series (225) - Greater than X Sudoku

(Published on 20. March 2018, 00:00 by Richard)

For this Sudoku Variants Project I have planned to publish a different Sudoku variant every Tuesday. I will see how long it takes before I am running out of ideas.

Greater than X Sudoku
Place the digits from 1 to 9 in every row, column and 3x3-block. In all cases where the difference between two neighbouring digits is X, there is a greater or less sign between those digits. Digits must be placed in accordance with the signs. It is part of the puzzle to find the value of X.

Solve online in F-Puzzles or Sudokupad (thx snowyegret and sisk0!)

Solution code: Row 8, followed by row 9.

Last changed on on 11. December 2025, 09:59

Solved by Senior, Matt, AnnaTh, lubosh, tuace, rcg, azalozni, jessica6, flaemmchen, r45, TashaYar, saskia-daniela, zhergan, rob, marcmees, NikolaZ, rimodech, Kwaka, Mody, zorant, KlausRG, Rollo, Zzzyxas, ... Kulko, snowyegret, TomBradyLambeth, AMD, Angelo, apwelho, Nickyo, Nylimb, mjozska1985, juventino188, martin1456, sisk0, Piatato, Illuminated, NEWS, goodcity, xiaozhu, akodi, dinyvel, Felis_Timon
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Comments

on 11. December 2025, 09:59 by Richard
Updated links for online solving.

Last changed on 13. November 2025, 19:55

on 9. February 2025, 12:14 by sisk0
Sudokupad link:
https://sudokupad.app/ztixlb20gs
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Hi sisk0, how did you manage to get the greater than symbols in the sudokupad app? I am preparing another puzzle that uses this symbols and I have no idea how to get them in my puzzle. Would love to hear how you did that!
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I am not sure if there is a better way but for this puzzle I seem to have done the following layers:

1. Given digits
2. Regions (not sure if this was needed?)
3. Cosmetic symbols with white rectangles to cover the lines where the greater than signs should be. For this puzzle I seem to have used fill/stroke color white, stroke width 2, width and height 40.
4. Cosmetic symbols with text size 50 with the < and > characters and varying the angle.
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Thanks for your quick response!
I had the white backgrounds in place already and tried the signs with lines, but that didn't work. I'll try the text next. Meanwhile I found that in Penpa+ these signs are standard available, but they are a bit thicker what I don't prefer... We'll see what it becomes.

on 23. August 2022, 06:42 by Richard
Added links and tag for online solving. Thx Nick Smirnov and snowyegret!

on 25. July 2022, 15:09 by snowyegret
https://f-puzzles.com/?id=25fjz5lb

on 10. October 2021, 14:01 by Nick Smirnov
Penpa:
https://git.io/JrspW

on 22. March 2018, 22:44 by Statistica
Also ich fand es mindestens vier Sterne schwer, aber ich habe wohl was Einfaches übersehen(?)

on 20. March 2018, 19:08 by Richard
Grammar mistake fixed.

Difficulty:3
Rating:81 %
Solved:105 times
Observed:18 times
ID:0002RE

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