Is there only one possible solution to each Flow Puzzle?

Whilst I've been playing Flow for quite a while now, some of my solutions seem ridiculously convoluted. I can't work out if there is only one solution to each puzzle or if there is sometimes more than one way to do it. Does anyone know or can provide a specific example?


Solution 1:

I found the specific example I was looking for indicating that yes, some Flow puzzles have multiple solutions:

Solution 1Solution 2

This is Level 136 in the 6x6 Mania pack of the base game. Both work as perfect solutions.