Gelfand safety regulations.
chess puns

The real song title is "Night Moves." "Night" and "knight" are homonyms, with different meanings. The phrase "knight moves" is a pun on the term "night moves."
"Knight moves" are made on a chess board. "Night moves" is a slang reference to "words and/or actions designed to induce a potential romantic partner to agree to an increasing level of physical intimacy over the course of a period of time in the evening or "night," as when the two people in question are "spending time together" on a "date."
I sure hope that helps. ( ;-D )
example: stop that tarrasch talking