Logic Masters Deutschland e.V.

Rules:

Normal Sudoku rules apply. Place the digits 1-9 once each in every row, column, and 3x3 box.

Each line acts as an arrow. Digits along lines sum to the digit in exactly one circle that is either diagonally or orthogonally adjacent to an end of that line. No circle has more than one line attached to it. Different lines also have other restraints applied to them.

-Adjacent digits along orange lines have a difference of at least four.
-Purple lines contain a set of consecutive, non-repeating digits, arranged in any order.
-Gray and white lines have no extra restrictions.

The lone white line has a circle, but it is invisible and may be found in any cell that is diagonally or orthogonally adjacent to one of its ends. To Play:
SudokuPad