Well, the biggest difference is that this room uses roach queens instead of simple roaches. (Level 19 1S 2E is the original.) So, don't think that you have basically solved it before. It's also one square larger in dimension. That's actually kind of a hint. A bit more:
Click here to view the secret text
×Remember the Master Intellect room?
If the orb toggles that would be useful too, since there's also an extra door on the side. I am not sure if it toggled in the original.
Game on,
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"
He who is certain he knows the ending of things when he is only beginning them is either extremely wise or extremely foolish; no matter which is true, he is certainly an
unhappy man, for he has put a knife in the heart of wonder."
-- Tad Williams