FOUR TRIES.
WITH THIS LENGTH, IT IS AUTOMATICALLY PHD LEVEL.
IF YOU PICK BLOCKS IN WRONG ORDER, YOU MAY HAVE A TWO OFF! THIS WAS REALLY ANNOYING.
IN YOUR NEXT DUNGEON, HOW ABOUT MAKING A DUNGEON NEEDING ONLY ONE BLOCK TO FILL?
:)
Came back a month later and finally solved this.
Still a fine practice of block manipulation, punished me many time for trying to pipeline too much.
Agree with sspenst that this is more like Amogus but not Umbreon.