I downloaded this a little while ago and I've enjoyed but I have no idea how to progress. I got all the torches to stay on but I don't know what to do after that.

Have the same problem... to be honest, I think that the chest is supposed to open by solving the torches but that the chest is failing to trigger.

there are at least 4 combinations that do not trigger a 'flames out', but only one of them opens the chest.

one hint: the garage has one item that better fits on the other side.