Mochinyoro
Shade cells so white regions are corner-connected rectangles and black regions are not rectangles.
Controls
Shade cells so every orthogonally connected white region is a rectangle, and all white rectangles are connected through their corners. No 2×2 area may be fully shaded. Every connected black region must not be a rectangle. A clue cannot be shaded and shows the area of its white rectangle; each white rectangle has exactly one clue. Tap a cell to cycle empty → shaded → white, then use Clear and the answer button.
Brain training · PuzGo