Heyawake Hitori Instructions

Rules: The challenge is to shade some cells on the grid, subject to the following rules:

1. Shaded cells must never touch horizontally or vertically
2. Unshaded cells must form one, connected area.
3. Superscript numbers dictate how many shaded cells are in a room, also a straight line of unshaded cells can only connect two rooms i.e. any such line of white cells which connects three or more rooms is forbidden.
4. No two numbers the same can remain unshaded in the same row or column.