Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply. Two digits from the same residues modulo 3 [147][258][369] may not touch orthogonally. Adjacent digits on a green line must have a difference of at least 5. Digits on a purple line form a set of consecutive, non-repeating digits in any order. Digits separated by a white dot have a difference of 1. Digits separated by a black dot have a 1:2 ratio. Not all dots are given.

Puzzle Link:

F-Puzzles

SudokuPad (with solution check)

Solve Video:

zetamath does puzzles

JC Godart

My youtube channel on solving sudoku: Crusader Puzzle