Logic Masters Deutschland e.V.

The Rules of this Puzzle:
Normal sudoku rules apply.

The solid blue lines form a group and so do the hollow orange lines. For each group of lines, digits must either continuously increase or continuously decrease along the line from the bottom-left-most cell to the top-right-most cell. Which group has which property is to be determined by the solver.

The amount by which digits either increase or decease is not necessarily consistent along a line. For example, the line from R5C1 to R1C5 could have the digits 1, 2, 4, 7 & 9.

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The Answer My Friend...is Blowing in the Cross Winds!