omg the 47 solution is really well made.
I have come back to this many many times before in previous months but I always had 49.
I felt like I have tried this approach but failed to optimize.
Unlike alazeh, my problem is that I just can't see how to manipulate the block and I was at 79 before.
Once I finally had the correct way, I had 69 and was able to optimize it shortly.
I will be now ready for Hole 7!
I guess I am the only one who had been stuck in this one for so long.
I came back to this one on and off, and 8 months after, I got this... feel relieved now...
this level kind of scared me so I hesitated to try it for long time.
today it was recommended to me again, and actually, to me, luckily, the way to push the block to the hole is easier than I first expected.