Light and Shadow
Shade cells so every black or white region contains exactly one size clue.
Controls
Shade some cells. Every orthogonally connected group of shaded cells and every orthogonally connected group of white cells must contain exactly one clue. A clue shows the size of its own shaded or white region; clues inside shaded regions are fixed black, while clues in white regions stay white. Tap a cell to cycle empty → black → white; use Clear to reset and the answer button to reveal or hide the full solution.
Brain training · PuzGo