Rooms of quiet.

The art of Heyawake

1. Count within each room. Thick lines divide rooms. Its number is exactly how many stones belong inside. An unnumbered room has no count limit.
2. Give stones space. Stones must never share an edge. Diagonal neighbors are fine.
3. Keep one open garden. All cells without stones must connect by their edges, even across room borders.
4. Break long corridors. Any straight horizontal or vertical stretch without a stone may pass through at most two rooms.

Tap a cell: empty → stone → leaf → empty. A leaf is your note that a cell stays open; empty cells also count as open. Arrow keys move focus; Space or Enter places a mark. Keys S/L/E select tools, Z undoes. No clock. No penalty.