Logic Masters Deutschland e.V.

Rules:
Chaos Construction: Divide the grid into 9 regions of 9 orthogonally connected cells. Place the digits 1-9 once each in every row, column and region.
Kropki: Digits separated by a white dot are consecutive, and digits separated by a black dot are in a 1:2 ratio.
Blocks: Clues outside of the grid represent the size of the largest consecutive set of cells that belong to the same region within their row/column.
Region Sum Lines: Region borders divide the lines into segments with equal sums. Each line must go through 3 regions, without entering the same region twice.

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