The mechanism is simply that of Halph is blocked from reading his destination, out immediately stops and returns to the starting position (at least, that's what I make of it).
So, the paths of H and roach must meet. So far so good.
Click here to view the secret text
×Try making a one tile corridor, what the two must both go through
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× Delay the roach by cutting out a spiral path around its starting position
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Autocorrect is
not my friend. Apologies for the typos.
