I've been chasing a dream ... what's the hardest 1 turn single-player level I can create? (with no randomness)

I've just created my fifth and hardest level yet. Here they are in order from easiest to hardest. If you're a puzzle pro (I'm looking at you Timi and Muli) then maybe take on the challenge of starting with the last and hardest level (since each one incrementally builds on the previous level).

Enjoy!

#1: https://www.warzone.com/SinglePlayer/Level?ID=1343187

#2: https://www.warzone.com/SinglePlayer/Level?ID=1345064

#3: https://www.warzone.com/SinglePlayer/Level?ID=1345155

#4: https://www.warzone.com/SinglePlayer/Level?ID=1345679

#5: https://www.warzone.com/SinglePlayer/Level?ID=1349502

Edited 10/3/2020 09:57:45