Four Winds
Fill every white cell by extending straight lines from the numbered black cells.
Controls
Each black cell shows the total number of white cells its lines must cover. Drag across cells from a black cell to draw straight lines north, south, east and west. Lines cannot pass through black cells, turn, overlap or leave any white cell empty. Every black cell must cover exactly its number, and each white cell belongs to one line. Use Clear to reset and the answer button to reveal or hide the full solution.
Logic · Paths · Numbers · Grid
Brain training · PuzGo