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Detail specifications UB13 - Level 1 ★
Support in the responder's suit
Support by opener in responder's suit
Suit changes by the responder at the 2 level only guarantee 4 cards in the suit ; So the opener requires 4 cards to support the suit of the responder.Nevertheless, there is an important exception : A 2 ♥ response after a 1♠ opening guarantees 5 cards
Suit changes by the responder at the 2 level only guarantee 4 cards in the suit ; So the opener requires 4 cards to support the suit of the responder.Nevertheless, there is an important exception : A 2 ♥ response after a 1♠ opening guarantees 5 cards