Logic Masters Deutschland e.V.

Puzzle link: Solve in SudokuPad

Chaos construction:
-Divide the grid into nine regions, each made of nine orthogonally connected cells, such that each row, column and nine cell region contains the digits 1 to 9 exactly once each.
L sums:
-Clues outside the grid show the sum of the first X digits from that direction, where X is the first of those digits.
-Each sum line makes one 90° turn at some point, making it some form of an "L" shape. Basically: the sum consists of two straight parts(which consists of 1 or more cells) connected by a "bend". The bend needs to be seen by the clue in the clue's row/column.
-Entire sum is situated in one region. The first cell immediately after the completed sum is of different region.
-Given black borders separates cells of different regions



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