That level was very hard to me. I won, but am still confused about it. The paths of the 3 blocks are very intricated together, in a large free room, what made it really difficult to me.
For those still stuck, in case it can help: instead of aiming at the final target square, I did set 2 intermediate targets, the 2nd one corresponding to where I want the blocks to be when arriving in final bottom zone.
Then I first worked on saving steps up to those intermediate locations, and eventually, that made me arrive in the last zone as required to do 62 on the real target.
Insights