Tiny Tension, a 5x5 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
Only five clues, and the one in the centre gives nothing but a tall icon, so at first it could be almost any column. Settle the edges first: the 2x2 square in the top-left, the wide 6 in the bottom-right and the tall 6 on the right edge. Then ask who can still reach the top-middle cell. Only the centre clue can, and that pins it down.