Iron Grid, a 8x8 Patches puzzle
Arrow keys move. Enter starts a rectangle; arrows resize it; Enter places it. Escape cancels. Delete removes a patch. Control or Command Z undoes.
About this board
Sixteen clues, and eight of them become 2x2 squares, which gives the board its riveted look. With so many small pieces the work is bookkeeping: each square has two or three spots, and placing one decides its neighbours. The one big piece is a shape-only wide clue in the middle with 48 possible patches; it resolves into a 5x2 band once the cell at its right end can only be its.