Here is the solution I can up with.
It's funny. Sometimes I can visualise the answers to these problems immediately, and other times I just don't see them.
I couldn't visualise this one.
I think, from what it said where I got this, that it’s hard to see it in the right way, but once you do the solution pops out.
I love puzzles like that, I’ll spend days looking for the “obvious” solution.