Logic Masters Deutschland e.V.

Please read carefully the rules and pay attention to the given examples before trying the puzzle.

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Rules:

Chaos Construction: Divide the grid into regions, each consisting of nine orthogonally connected cells. Each row, column and region must contain the digits 1 to 9 once each.

Anti-triominos: A region is not valid if it can be divided into three separate triominos (polygons made of three squares connected orthogonally edge-to-edge).

Compass: Each region contains a single compass. A compass is a square in a cell.

A digit placed on an arrow pointing away from a compass indicates the number of cells belonging to the compass region in the side of the grid delimited by the column or row border defined by the arrow.

e.g.: because r5c3 is a 1, the region of the compass in r4c3 has only 1 cell somewhere in rows 5-9, and the region of the compass in r5c4 has only 1 cell somewhere in columns 1-3.

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Some clarifications about the rules.

In the example below are shown to different regions. The blue region at the left is not a valid region for this puzzle because it can be divided into three separate triominos. The pink region at the right, instead, is a valid region because it can't be divided into three separate triominos.

In the example below you can see a valid region for the green compass. In this example, the green region has exactly 6 cells at the right of the compass (i.e. between columns 4-9) e 1 cell below the compass, as requested by the clues pointed by the arrows.

Thanks Myxo for testing the puzzle and BremSter for your help in wording this peculiar ruleset in the best way.

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Have fun solving and please leave a comment after you solve!