How to play: Connect each pair of numbers with a path, by dragging with your mouse. Paths cannot overlap. Additionally, you must fill up the entire board. To erase a path, use the right mouse button. If you wish to restart the puzzle, press the restart button. Solve: Press the solve button to automatically solve the current puzzle. Note though that the solver assumes the puzzle only has solutions that do not involve paths doubling back on themselves (in other words, the paths maintain a width of 1). Try finding a puzzle that breaks the solver! Editing: We've provided you with this initial puzzle, but you may create your own with the edit feature. Enter edit mode by pressing the edit button. Then, click on squares and set them to whatever numbers you wish. Press the edit button again to play your puzzle. To get a completely empty board, press the clear button.