Publisher's Synopsis
Heyawake (from Japanese, -divided rooms-) is played on a rectangular grid. The grid is divided into rectangular -rooms-. Some rooms may contain a single number. These rooms must have the designated number of cells painted black. Other rooms may have zero or more cells painted black.
- Black cells must not be orthogonally connected.
- All white cells must be interconnected.
- A line of connected white cells must not connect more than two rooms together.