Took ages to even reach the exit at 10off, then gradually cut it down till I made 19. Tricky for me. Much, much easier than chicken wrap. Exactly the type of block field I hate, I just couldn't get through it for ages, then found a way through and whittled it down. Nice level, I kept getting the last block wrong initially. The instructions probably helped, got it first try, 2off to start, read the instructions and got it next go, Usually this sort of level defeats me, however due to some extreme luck I got this straight off,,,, oh and the instructions. I think I was lucky and got it second try, tricky. First attempt 2 off was best, came back and eventually got it, tricky level. 
Insights