GW + RL + DW SWU (50mathSWU)
(Published on 26. July 2026, 09:48 by ivaylagergova)
Normal Sudoku rules apply.
German Whisper Lines (green): Two cells connected by a German Whisper line must have a difference of at least 5.
Renban lines (pink): Every Renban line contains a set of consecutive digits in any order, without repeats.
Dutch whisper lines (orange): Two cells connected by a Dutch whisper line must have a difference of at least 4.
Difference Kropki dots (white): Cells joined by a white dot must have a difference of 1.
Ratio Kropki dots (black): Cells joined by a black dot must have a ratio of 2.
Created by Ivayla Gergova for the Sudoku Competition celebrating 50 Years of Mathematics at South-West University "Neofit Rilski" in Blagoevgrad, Bulgaria.
Play online in SudokuPad.
Solution code: Row 9
Comments
on 26. July 2026, 12:51 by wuc
Congrats to 50 years. Cool puzzle. Rather 2* to me. Great fun thx.
