| 
    Walsh Diamond (Walsh Responses) - Outside 
    the Walsh system, after partner opens 1 Club most players bid four card 
    suits "up the line" looking for a major suit 8+ card fit.  Not 
    necessarily so with the Walsh Diamond where responder begins by showing a 4 
    card major with a minimum hand.  The Walsh philosophy is, "Immediately 
    bid your major suit with a minimum hand; with game-going values and a long 
    Diamond suit, only then should you begin with the 1 Diamond response and 
    belatedly rebid a major suit on your own.  When responder does not hold 
    a 4 card major, Walsh players respond 1 Notrump with 8-10 points; otherwise 
    respond 1 Diamond with a balanced hand and less than a reasonable 6- 8 point 
    hand. 
      
        | Bid | Meaning |  
        | 1C - 1S; | Holding a 4=2=5=2 minimum 
        or invitational hand, responder bypassed 1D, bidding a 4 card 
        major. |  
        | 1C - 1D; | Holding 3=3=5=2 (lacking a 
        4 card major), bid 1D with less than 8 points |  
        | 1C - 1N; | Holding 3=3=5=2 (lacking a 
        4 card major), bid 1N with a good 8-10 points |  
        | 1C - 1D;1N - 2C
 | Holding and unbalanced 
        minimum hand (say 2=1=5=5 shape), signoff in 2 Clubs even though opener 
        may hold one or two 4 card major suits. |  
        | 1C - 1D;1N - 2D;
 | Holding and unbalanced 
        minimum hand (say 2=3=6=2 shape), consider signoff in 2 Diamond even 
        though opener may hold one or two 4 card major suits. Rebidding 2D 
        is often best when the Diamond suit may not be promoted, perhaps lacking 
        honor entries. |  
    Using the Walsh 1 Diamond approach then, after 1C by opener and 1D 
    by responder, opener need not rebid a 4 card major (unless they hold an 
    unbalanced hand).  Accordingly, opener can simply rebid Notrump with a 
    balanced hand. 
      
        | Bid | Meaning |  
        | 1C - 1D;1N - P;
 | After responder bids 1D, 
        opener assumes responder does not hold a 4 card major and bypasses a 4 
        card major (perhaps 4=3=2=4 shape).  Holding minimum values and a 
        balanced hand, responder passes.  With an unbalanced hand, 
        responder rebids a minor suit. |  
        | 1C - 1D;1N - 2S;
 | Holding 4=2=5=2 with 
        opening hand or better, begin by bidding 1D, rebidding a major 
        suit with game-going values (make a "reverse" rebid of a 4 card major if 
        necessary, 2S here should opener rebid 1N) |  
        | 1C - 1D;1H - 1S;
 | After responder bids 1D, 
        opener rebid of a major signifies an unbalanced hand (say 2=4=2=5).  
        Should responder rebid 1S, the bid shows an opening hand with 4 
        Spades and 4+ Diamonds (responder's 1 Spade bid is natural and game 
        forcing). |  
        | 1C - 1D;1S - 2S
 | Opener's hand is 
        unbalanced, rebidding 1S. Responder's rebid agreements vary 
        depending on partnership understandings:
 1. Responder's 2S bid is a signoff bid with minimum values, and 
        unbalanced hand and only 3 card Spade support (perhaps 3=3=6=1 shape).  
        With a minimum hand and 4 Spades, responder would have initially bid 
        1S.
 2. Responder 2S 
        bid is invitational, show 11 points and 3 card support |  
    In summary, after opener begins 1C and responder bids 1D, with 
    a balanced hand opener rebids 1N - bypassing a 4 card major suit.  If 
    responder has a good 12+ point hand, responder will rebid a 4 card major 
    (check-back bid). 
    Note: on the ACBL Convention Card, the players check "Frequently bypasses 4+ 
    Diamonds." 
    Some play after responder begins with a 4 card major and jump rebids 3D, 
    the bid shows a weaker unbalanced hand with a 4 card major and 6+ card 
    minor: 
      
        | Bid | Meaning |  
        | 1C - 1H;1N - 3D
 | Holding a 1=4=6=2 minimum 
        hand, responder still bypasses 1D, rebidding 3D as a 
        signoff bid.  Unlike other methods, responder's jump rebid is a 
        conventional signoff bid.  Responder's 2D rebid would also be 
        conventional (New Minor Forcing, Checkback Stayman, X-Y-Z, etc). |  
        | 1C - 1H;1N - 2D
 | In lieu of the above 
        methods, some others prefer to rebid only 2D  to handle the 
        above situation (4 card major, 5+ Diamonds and a weak hand).  
        However, this approach negates conventions like
        New Minor Forcing,
        2C Checkback Stayman, 
        etc. |    |