This puzzle comes from the game Lyne.
The rules:
- Start and end at the shape with a white dot in the middle
- Only connect same colours together
- Lines cannot cross each other
- All points must be connected
- Grey points can have anything go through them
- Grey points must be connected with the amount shown of the dots in them.
The puzzle is complete when all points are connected and the lines go from the start to end points.
I struggled with this one so thought it would be fun to share, if anyone is interested it is F11 in the main game.
The solution is easily google-able so please don't.