To that project in DC where my man caught his death at
Over my years I've seen Rooks get tooken by the Knight

from Jay Z – This Life Forever Lyrics on Rap Genius

Meaning

Rooks and Knights are chess pieces. Rooks are more valuable pieces, so for a Knight to take a Rook is, in Jay’s metaphor, an up-and-coming hustler knocking off a more established dude.

Or, rooks can mean rookies. And knight/night is a homophone. So, the line could mean that the younger guy actually gets knocked off by the night, which symbolizes danger

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