And finally, we round out this first batch of Gravel puzzles with one that only uses numbers and no circles. I’m really happy with how the theme and logic turned out in this one, that single 1-clue notwithstanding.
Rules: Shade some cells and divide the remaining cells into squares. Each unshaded square must touch at least one other square or the edge of the grid on each of its lower sides. Squares of the same side-length cannot touch. Cells with black or white circle clues must be shaded or unshaded, respectively. Number clues inside shaded regions indicate the total area of the region. Number clues inside unshaded squares indicate the side-length of the square.