I didn't play this particular room, but from the picture, I see nothing special hidden below the tar.
This means that you will be probably helped by thinking about when to hit the mothers.
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×If you kill them too early, the tar will not grow anymore...
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×So any 2x2 bloc blob you create afterwards will remain 2x2 for ever.
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×But down a reasonable amount of tar and count on the mothers to make a citywide configuration
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Autocorrect is
not my friend. Apologies for the typos.
[Last edited by Dying Flutchman at 10-03-2018 08:05 PM]