I have 7 doors coloured like the rainbow:
You can move in either direction moving one door for the first go, two for the second, three for the third, etc - you get the idea.
You can jump to the other side. e.g. On your first go you can move from red to violet.
Start on red. Is it possible to go to each door, only going to each colour door no more than twice? (It is impossible to do it touching each one just once)
You must end up back on red
What is the sequence of movements which will result in success? (I am looking for the least amount of moves)
The current leader board, top 5:
- Matt: 9
- Oren Melzer: 9
- Matt: 13