I learnt something here. The 2 off was very convincing. I like levels like this. Where the challenge is to be able to get to the exit at all. Nice trick. Looks scary at first but it's not bad once you get the pattern. I found this one tricky to get the last 2 steps. Would be better if it were smaller given all the wasted space. This one gave me a lot of trouble. It makes complete sense now but I was stuck at 4 off for a long time.