| Bergen 
    Raises - A strategic system of responses to partner's major suit opening 
    bid showing 3 or 4-card trump support, providing both a constructive and 
    preemptive basis.  Also see: 
        
        Better Bidding With Bergen: Volume 1 - Uncontested Auctions  
    (pg 38) Note: Most 
    play that Bergen Raises are "off" after a passed hand, opening in third or 
    fourth seat (see 
    Drury) or when opponents interfere with bidding.  A minority of 
    players have reversed the meanings between 3 Clubs and Diamonds (called 
    Reverse Bergen).  Also see 
    BROMAD Bergen Raises 
    accommodate numerous variations, requiring detailed partnership agreements: 
          
        |  | Distribution Points
 | Trump | Bid Response |  
        |        Using Constructive Raise treatment, use 1 and 2. |  
        | 1. | 5-7 | 3 | 1N (forcing), then 
        single raise in major |  
        | 2. | 8-10 | 3 | 2H/S (Constructive, 
        typically 2.5 - 3 
        cover cards) |  
        |        Using 
        Non-constructive Raises, use #3. |  
        | 3. | 6-9 | 3 | 2H/S Single raise |  
        | 4. | 10-12 | 3 | 1N (forcing), then 
        Jump to 3 in major |  
        | 5. | 13+ | 4+ | 2N Use 
        Jacoby Transfer bid |  
        | 6. | 7-10 | 4 | 3C (Note: Some 
        exchange the meaning of 3C/3D) |  
        | 7. | 10-12 | 4 | 3D (Note: Some 
        exchange the meaning of 3C/3D) |  
        | 8. | 2-5 | 4 | 3H/S jump to 3 in 
        major (preemptive)See #11 below for opposite major jumps (concealed splinter)
 |  
        | 9. | 13-15 | 3 | 3N jump with 
        stopper.  The conventional variation uses 3N to show 3 trump with a 
        flat 4-3-3-3 hand and honors spread among all suits.  Opener can 
        then make a choice of game. |  
        | 10. | 2-5 | 5+ | 4H/S jump to 4 in 
        major w/favorable Vulnerability (preemptive) |  
        | 11. | 9-12 | 4+ | Traditional, non-Bergen 
        treatment (used by many players)4C/D/H splinter in short suit (singleton/void)
 |  
        | However, Marty Bergen's 
        original treatment is to use a generalized "ambiguous splinter" 
        (concealed splinter) bid of 3 in the opposite major bid by Opener - with 
        slam interest. See #12 -14 |  
        | 12. | 9-12 | 4+ | 3H or 3S (opposite 
        major). With slam interest, Opener can then make a artificial suit bid 
        one suit step above Responder's concealed splinter suit bid to discover 
        responder's short suit or make other appropriate bids:
 1H - 3S; 3N - ? 4C=Clubs, 4D=Diamonds, 4H=Spades
 1S - 3H; 3S - ?  3N=Clubs, 4C=Diamonds, 4D=Hearts
 |  
        | 13. | 9-12 | 2-3 | 4C is a "Swiss 
        Raise" when playing ambiguous splinters.  4C describes a 
        hand better than a Bergen 3N response, thus 4C show 16+ 
        points.  This treatment is seldom included by most Bergen Raise 
        players. |  
        | 14. | 9-12 | 5+ | 4D describes a hand 
        stronger than jumping to 4H/S (2-5), equivalent similar to a 3C 
        (7-10) Bergen raise with 5 or more trump.  This treatment is seldom 
        included by most Bergen Raise players. |  Examples: 
          
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        |  |  Q J 2 
  7 6 
  J 10 3 2 
  Q 7 5 3 |  |  1S - (P) - 
        ? Holding 6 
        HCP plus 1 distribution point for the Heart doubleton, first bid 1N 
        (forcing) planning to rebid 2S on next bid.  Directly 
        bidding 2S would show 8-10 points - a constructive raise. 
        
 
          
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        |  |  Q J 2 
  7 6 
  K  10 9 2 
  K 7 5 3 |  |  1S - (P) - 
        ? Holding 9 HCP plus 1 distribution point for the Heart doubleton, bid 
        2S (alertable if playing constructive raises, showing 3
    cover cards here - 2 
    Kings and trump Queen) 
 
          
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        |  |  Q J 9 2 
  6 5 
  K J 10 2 
  9 7 5 |  |  1S - (P) - 
        ? Holding 7 HCP 
    with 4 Spades, bid 
        3C. 
 
          
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        |  |  K J 9 2 
  6 5 
  K Q J 2 
  9 7 5 |  |  1S - (P) - 
        ? Holding 
    10 HCP with 4 Spades, bid 
        3D.   |