Hi Mark, it took me 4 bars and a few bits of rope to open the gate so I think you are closer to the right track than I am, if there is an easier way nobody will tell you until after the contest. A few weeks ago I don't think I could have got inside this one never mind getting into the portal, this game is a case of do your best and patiently follow a learning curve.
I am now at 2965
(not likely to improve
) and yet again will be learning more when the solutions are revealed, adding to the knowledge to score more in the next one
This is the first one I have played and not been able to get a half decent Light solution, I have to admit I cannot see any Light way into the portal, I had to use some demolition for my Dark one to work