You know what it looks like… but what is it called?
TAKE THE QUIZ“club system”
We have one entry that includes the term club system.
two-club system
noun: a system of bidding in contract bridge in which an opening bid of two clubs is artificial and forcing to game and the bidder's partner responds two diamonds to show a hand with less strength than one ace and one king
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Merriam-Webster unabridged