Kurodoko
Shade cells so every number sees the right count of white cells.
Controls
Shade some cells black. Numbered cells stay white and show how many white cells can be seen in a straight line up, down, left and right, including the numbered cell itself; sight stops at a black cell or the board edge. Black cells cannot share an edge, and all white cells must stay connected. 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