Logic Masters Deutschland e.V.

Rules:

• Classic sudoku: Every row, column and 3x3 box contains the digits 1 to 9 exactly once.
• Mystery lines: The brown, teal, purple, yellow, and orange lines are mystery lines. Each color is exactly one of the following line types, and no two colors are the same type:
  • German whispers: adjacent digits along the line must differ by at least 5.
  • Palindrome: digits along the line read the same in both directions.
  • Parity line: adjacent digits along the line alternate between odd and even.
  • Zipper line: digits an equal distance from the center of the line sum to the digit in the center.
  • Region sum line: box borders divide the line into segments with the same sum. Different lines may have different sums.

Solve online: SudokuPad

If you'd like to first try a smaller and easier version of this puzzle, check out Mini Mystery Lines.