Logic Masters Deutschland e.V.

Below is a 6x6 example puzzle to better understand the rules.

Rules:

- The grid is mostly covered in fog. Placing correct digits will lift the fog around the placed digit revealing more clues.

- Construct 9 orthogonally connected regions within the grid such that every row, column, and constructed region contain the digits 1-9 once each.

- Digits in a circle show the number of different regions that appear in the 3x3 area around the circle including itself.

- Region positions are read from left-to-right, top-to-bottom. Digits in a circle index the region as follows (if a cell at region position P contains digit D, then cell at region position D contains digit P.

- Cells separated by a white dot must contain consecutive digits.

- If a gray dot lies entirely within a region, those cells must not be consecutive. If a gray dot lies on the border of two regions, those cells must be consecutive.