Logic Masters Deutschland e.V.

Rules:

Draw a non-intersecting loop along some edges. Cells inside the loop form one orthogonally connected area and cells outside the loop are orthogonally connected to the edge of the grid. A 2x2 area cannot be entirely inside nor entirely outside.

One clue in a cell refers to the number of edges that are part of the loop (i.e. slitherlink) and the other refers to the number of cells of its own type (i.e. inside or outside the loop) that it sees horizontally and vertically, including itself. The order in which the clues appear is arbitrary. A “? ?” in a cell means the two clues have the same value.

Solve:

• SudokuPad
• Penpa+