A popular bidding system in contract bridge, this convention employs a two-level response to a one-level opening bid to indicate a strong hand. Specifically, when responder has at least 10 high card points and a five-card or longer suit, they bid two of a suit higher than the opener’s suit. This response is forcing to game, meaning the partnership must reach a game contract.
Adopting this method allows for more precise hand evaluation and improved communication between partners. It facilitates efficient bidding sequences, leading to better contract selection and improved scoring opportunities. Its prominence has increased over time due to its demonstrated effectiveness in competitive bidding scenarios and its ability to quickly establish the partnership’s combined strength.