Pencils

Game Rules: Pencils

Build straight pencil bodies and draw a line from each tip. Its length in edges must equal the number of body cells. Together the sets must fill the grid.

Fill every cell with complete pencil sets: a straight, one-cell-wide body, a separate tip pointing away from it, and a nonbranching path from that tip. The path must have as many edges as the body has cells. Sets cannot overlap; paths cannot cross. Every number belongs to a body of that length; a body may contain several equal numbers or none. Given tips keep their direction. Drag from the back of a body to its tip cell to place a pencil. Drag from a tip or path to draw a line; retrace a segment to erase it. Hold a body or tip to erase its pencil and path; hold a path to erase that path. With a mouse, right-click instead of holding.