Nuritwin - Twin Block Nurikabe Logic Puzzle

How to Play

• Shade cells so every outlined region holds exactly TWO connected blocks of equal size.
• A number inside a region gives the size of both of that region’s blocks.
• All shaded cells must form one connected group across the whole grid.
• No 2×2 area may be fully shaded (it turns red). Click to shade, right-click to erase; auto-check runs as you go.