I look at it and thought: one more where I will remain stuck for ever... With cold feet, I did study before to start and was lucky to notice something that gave me the way to do it. I tried it and was 4 off on first try. Optimization followed logically. Yeah! Such fun!
Very nice one! Very well executed and well thought out.
It took me quite a while to even see how to do the exit touch. My first touch was done very chaotically and took nearly twice the stepcount needed. Only in the 4th or 5th try did I then get it right.