Is this an error? Both designated squares on the screen are covered, I'm unsure if this just isn't the intended solution or if there's something I'm missing. Also, great game so far! I'm having a lot of fun with it.
# HINT 1
Squares do not affect the gate.
# HINT 2
The opening of the gate is influenced by the location of the boxes.
# HINT 3
if there is one window to the left and right of an empty cell, then all gates above and below this cell open, and vice versa.