Kuromasu

Kuromasu (Kurodoku) is a Japanese logic puzzle. Blacken some cells so that each number cell “sees” the given number of white cells.

Rules: Colour the grey cells of the grid black or white. A cell with a number is always white.
The number indicates the number of white cells you can see when looking north, south, east, and west from that cell until your view is blocked by a black cell or the edge of the grid (the cell with the number is counted).
Black cells must not be orthogonally adjacent. All white cells must form a single, orthogonally contiguous area.