Ok, I concede, Hard it is. It can be hard sometimes rating the difficulty of your own levels. Appologies for getting this one so wrong. Thanks for your comments guys
Ok perhaps medium but definately not hard. I didn't think it would be difficult when I made it and I am surprised only 4 players have so far completed it. If you are struggling try a different strategy, come in to the centre from a different angle/ place and work out how to get the last two blocks into position. A little bit of preparation goes a long way