Is the problem that they can't move right because they lay an egg and get blocked in. And then you go over to the right side to draw out the roach, but that pushes the queen back to the left? (I ask, because that's essentially the problem I remember having in this room).
If it is, then, can you use this problem against them?
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×wait to go to the right of the queen until they lay a roach to the left. Then they'll be stuck while you lure the roaches on the right out and you can go back to the left to push the queens out a little further and so on.
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