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    What is meant by the term defensive tricks by the responder after partner 
    preempts with 3 Hearts?
 
    Conceptually, your holdings can be viewed as offensive tricks, defensive 
    tricks, or both.  Let's say your partner opens 3H and you hold: 4 3   A 10 
    8 2   K Q J 10 9 3 2   -- 
    Provided your side wins the contract in Hearts, you should lose no more than 
    3 tricks - two Spades and 1 Diamond.  So your hand is worth a whopping 7 
    offensive tricks.  However, if your opponents outbid you in Spades, both 
    your and your partner's hand has little value - perhaps 1 Heart and a few 
    Diamonds.  
    These are called defensive tricks (where your side is the defender).  So you 
    not only want to bid 4 Hearts, you should persist on to at least 5 Hearts if 
    opponents bid 4 Spades - you can see by your holdings they have very long 
    Spades and Clubs.  Further, since your partner is marked to hold the King – 
    Queen - Jack and little else, and since you have only 10 High Card Points 
    yourself, the opponents must have at least 25 points - more than enough for 
    game with their long black suits. 
    Thus, with a strong concentration of length and honors in a suit, you should 
    be bidding aggressively.   The third circumstance is holdings that are 
    useful both offensively and defensively.  This would be a hand where your 
    side does not have particularly long suits yet you and your partner have 
    useful honors.  Let's say your opponents end up in a 4 Spade contract and 
    you hold: A K 2   7 
    6 5 4 3 2   K Q   A 4   (16 points) 
    Notice how your honors should guarantee at least 4 tricks, 2 trumps 
    (Spades), at least 1 Diamond, and 1 Club.  With this holding, you should 
    Double the opponents contract. 
    If you want to impress your friends, you can say the hand has "transferable 
    values" (useful both offensively and defensively).     
    However, let's say you held: 4 3 2   A 
    K Q J 10 9   Q J 2   K 4  (16 points) 
    You hand might only produce 1 or 2 tricks - again, the honors are primarily 
    offensive (no transferable values).  
    One final thought - assuming you and your partner use a disciplined 
    preemptive bidding approach (based on vulnerability), you could use the "Rule 
    of 2-3-4" to evaluate your preemptive partner's effective playing tricks 
    when considering game rebids.   Hopefully this provides you 
    insights in hand evaluation and competitive bidding.   Here's a 
    list of some good books on
    
    Preempts.   |