Rules - Arrowneous

Arrowneous was invented by the Japanese puzzle company Nikoli.  The name comes from Rick Griffin, a reader of mathgrant's blog.

1. Make each cell white or black.

2. No two black cells may share an edge.

3. All white cells must be connected to each other through their edges.

4. A white cell with a number and an arrow show how many black cells are in the row or column pointed at by the arrow.

5. Cells with a number and an arrow can be shaded in.  If they are, the clue is meaningless, and may or may not be true.