Connect every `house` with every `well` without the lines intersecting. ![enter image description here][1] I am not sure if this puzzle has a solution. I have been puzzled by it for a long long time. An old man from my village mentioned this puzzle to me 12 years ago. I have never been able to solve it, I'm hoping someone here can. [1]: https://i.sstatic.net/ws29f.png