I hate the other path that leads to 163 :P . Hard tricks only at the bottom-left corner. The bottom-right corner is really tricky. Yeah I finally found the 2 moves off trick ! It only makes sense when you look at the level for a while :P Really good locks here !!!
I think you missed two "2 moves off" tricks here : a quite easy one and a harder one. This should be in the game xD