Logic Masters Deutschland e.V.

Rules

1. Aqre: Shade some cells so that all shaded cells form one orthogonally connected area. There may not exist a run of more than three consecutive shaded or unshaded cells horizontally or vertically anywhere in the grid.


2. U-Bahn: Draw a totally connected loop network through the centers of some cells, which may branch or turn, but may not have any dead ends. A clue outside the grid indicates how many times the corresponding line shape (i.e. cross, branch, straight line or turn) appears in the corresponding row/column, irrespective of rotation.


3. Interaction: Unshaded cells may only contain branches or corners. Shaded cells may only contain crosses or straight lines, or be empty.