Pre-emptive Opening bids - Facts Counting tricks for hands with a 7+card suit and 6-10 HCP : The A, K or Q in the long suit = 1 trick each Every card after the 3rd card in the long suit = 1 trick each In the other suits : A or K = 1 trick each   AQx or KQx = 2 tricks The Rule of 2 and 3 : Open 2 more than the tricks in your hand when you are Vulnerable Open 3 more than the tricks in your hand when you are Not Vulnerable But do not bid higher than Game (4♥ 4♠ 5♣ 5♦) Counting tricks in Responder's hand : The A, K or Q in Opener's long (trump) suit = 1 trick each In the other suits : A = 1 trick   K = ½   AK = 2   AQ = 1½   KQ = 1 trump support and a singleton = 1 trick trump support and a void = 2 tricks Then add the tricks in your hand to those of the Opener and bid accordingly. For example : Partner opened 3♥ Vulnerable and you hold 3 tricksBid 4♥ : together you hold (9 - 2) + 3 = 10 tricks Partner opened 3♥ Not Vulnerable and you hold 3 tricksPass ! : together you hold (9 - 3) + 3 = 9 tricks only Partner opened 4♦ Not Vulnerable and you hold 2 tricksPass ! : together you hold (10 - 3) + 2 = 9 tricks only(You may well go down one, but opponents would certainly have missed a better contract themselves.) Partner opened 4♠ Not Vulnerable and you hold 4 tricksPass ! : together you hold (10 - 3) + 4 = 11 tricks, not enough for Slam(But if the Opponents compete with a higher bid, you can raise to 5♠.)