Heyawake

Heyawake with twelve original, uniquely solved 5×5, 6×6 and 7×7 room-shading puzzles and seeded rotations/reflections. Thick room boundaries and printed exact shaded quotas include zero; unnumbered rooms are unrestricted. Shaded tiles cannot touch orthogonally, all white tiles connect, and no straight uninterrupted white line may pass through more than two rooms. Clue-bearing tiles are editable. Familiar keyboard, direct mouse/touch, outside keypad, notes, zoom, English/PT Help, original art and synthesized audio. Solo has optional counted hints. Exact local 2 hides independent boards at private handoff with separate active clocks. Exact online 2/3/4 race the same seeded puzzle for eight minutes; rule-checked completions rank by host-observed time and unfinished seats tie last. Casual host-managed results are unverified. Departure/backgrounding safely aborts without a result; no reconnect or host migration.

Arrows/WASD select immediately; Space/click/tap cycles unknown/shaded/white. X/right-click/450ms touch toggles white; 1 white,2 shade; Delete/Backspace clears,Enter checks separately. Ctrl/Cmd+Z Undo,Ctrl/Cmd+Shift+Z or Ctrl+Y Redo. Native outside keypad/selects,pencil,zoom,visible focus. Esc closes Help then pauses/resumes solo/local; online Help stays live. M mute; R confirmed restart. Exact local2 private handoff and clocks; online2/3/4 eight-minute same-challenge races. Casual unverified outcomes. Portrait preferred; landscape supported.