Click the Green Flag to start (or at any time to restart). Click/tap somewhere to start drawing a line. Click/tap elsewhere to complete a line & start the next. Try to touch all 9 Spots with as few lines as possible.
I changed @papipupepappa's very nice original project so you couldn't solve it with 3 lines. I did this to reflect the paper & pencil mathematics problem it's sourced from (see further comments below). @papipupepappa did it his way in full knowledge of the source problem. The problem is usually presented as a paper & pencil mathematics problem, where when drawing lines you are not allowed to lift the pencil from the paper during the drawing process. This remix is a faithful representation of that problem and is the reason why the end point of one line is always the starting point of the next line. If you could lift the pencil off the paper during the process the problem would be easily solved with 3 parallel lines.
