Logic Masters Deutschland e.V.

by Md88keys

Play on SudokuPad

Standard sudoku rules apply.
Renban (purple line): Digits along a purple line form a set of consecutive digits in any order.
German whisper (green line): Neighboring/adjacent digits along a green line have a difference of at least 5.
Dutch whisper (orange line): Neighboring/adjacent digits along an orange line must have a difference of at least 4.
Region sum line: (blue lines) Box borders divide a blue line into segments which have the same sum. Different lines may have different sums.
Kropki dots: Digits in cells joined by a black dot are in a 1:2 ratio. (i.e., one digit will be double the other). Not all dots are given.