Soft Grid, 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
The two tall 4s on the left are fixed straight away, and that is where the chain starts. The top-left corner can then only belong to the 2, the bottom of column three only to the 3, and the bottom of column four only to the 6. With those placed, the wide clue in the top-right corner stretches into a 3x2 block over what is left. Expect one more round of checking than the earlier boards.