Opening bid of 1D (artificial, showing 11-13/15 pts, no 5 cards major & dia. can be anything) and its Responses

  1. Opening bid of 1D( Artificial) and various rebids on forcing bids of responder
    1. Opening bid of 1D:
      This is weakest bid of all the opening bids in terms of points and suit is also not known at first instance but its frequency is highest compared to other opening bids. When you have 11-13 points and NO FIVE cards MAJOR suit, you bid 1D, which is an artificial and has nothing to do with DIA Suit. (Note:- very rarely, when you have got 4-4-4-1 dis. with singleton major, you can have 14-15 points which is shown by jumping to major i.e. 2S/3H on 1H relay by partner). Your hand can be one of three types viz. (a) about 50% of time, it will contain four cards of one of the major suit, (sometimes even both the majors or one major & 5 cards minor suit) (b)about 25% of the time it will have min. 5 cards minor suit (having no 4 cards major suit) and (c) about 25% of the time, it will be balanced hand ( having no 4 cards major suit as well as no 5 cards minor suit) guaranteeing min. 3 cards minor suit support.

    2. Rebids by opener on forcing bids of responder
      There are two forcing bids by responder viz
      (a) Game Force:- On reponder's jump bids in major ie. 2S/3H (showing 13+ pts. and just 5 cards suit), opener on rebid,raises the major with 3 cards support otherwise bids as per his holding i.e. 3C/3D showing min. 5 cards suit or 2NT/3NT
      (b) One Round Force:- On responder's relay bid of 1H(Artificial, seeking 4 cards major & 10+ pts.),opener on his rebid, has to
      1. First,show 4 cards major suit (as most of the time, it is easier to make game in major suit than minor suit), if any, i.e. 1S/2H (bid of 2H denies 4 cards spades), otherwise
      2. Bid 5 cards minor suit,if any, i.e.2C/2D (denying 4 cards major suit).
      3. Bid 1NT (denying 4 cards major as well as 5 cards minor) guaranteeing min. 3 cards minor support.
        This clarifies to great extent, opener's dist. and, if possible, responder may decide the final contract without further exploration (which may help opponents). However, if required, responder may make more relays to find out opener's further dist., till he arrives at appropriate contract.

  2. Responses by partner:- After opening bid of 1D has been made, responder has to first count his points and decide whether it is part game, borderline game or sure game and above.
    1. With 13+ points, responder has got three options depending upon his distribution viz.
      1. Jump to major suit i.e. 2S/3H, in case he has got only 5 cards major suit (also no 4 cards other major suit) and un/balanced hand (opener to support bid suit major if he has got min. 3 cards support, otherwise bid as per holding).
        similarly jump to minor suit i.e. 3C/3D if also game force but it shows unbalanced hand i.e. one major singleton and no 4 cards other major. {Opener to bid (a) first 5 cards other minor i.e. 3D/4C, if any, which shows no support of responder's minor & searching for a game in other minor, otherwise (b) bid 4 cards lower major suit i.e. 3H/3S, if any or 3NT which shows 3 cards support and (c) with min. 4 cards support, he raises the suit i.e. 4C/4D }
      2. Jump to 3NT if he has no 4 cards majors and balanced hand (or may have 5 cards minor) as unnecessary exploring may help opponents
      3. Finally,in case he has unbal. hand or interested in slam, he can bid 1H relay or series of relays (artificial, forcing for 1 round) to find out opener's dist. (without disclosing his hand to opponents) and arrive at appropriate contract depending upon known dist. of opener.

    2. With just 12 points and balanced hand, he jumps to 2NT, informing partner to bid game if he has got higher side points.

    3. With 5/6 - 11 points, he bids his min. 5 cards suit or NT i.e. 1S/1NT/2C/2D/2H which is not forcing (Note - as 1H is relay, he has to bid 2H in case of 5 cards H suit). Opener to change the suit only if he has got singleton in bid suit.

    4. With less than 4/6 points, he should pass.

Points to remember on 1D opening

  1. Relays:-
    1. Opener never uses any Relays. He has to only go on replying to Responder's relays as now onward. Responder is the Captain of the game.
    2. Here Responder can use only distribution relay by 1H in case he has 13+ pts & some 4 cards major (i.e..1D-P-1H-P/?). However if he has just 5 cards major suit & 13+ pts., he should use direct route by jumping in major suit e.g.1D-P-2S/3H. Opener to support with min.3 cards otherwise bid as per his holding.
    3. Opener's replies on relay:- On 1st relay of 1H, opener has to show first 4 cards major, if any, otherwise show 5 cards minor, if any, or else bid 1NT.(Note:- Bid of 2H denies 4 cards S).Generally after reply of 1st relay of opener, responder will have more or less clear picture of opener's distribution so that he is position to bid final contract in the next bid itself. But still if he wants more information, he should use further relay by next higher suit on which opener will show next 4 cards suit.

  2. Jumps Bids:-
    1. There is no jump bid by opener of 1D except
      1. When he has 4 cards major as well as 5 cards minor with some singleton, he gives jump bid in minor suit on second relay of responder provided reply does not cross 3NT level. e.g.1D-P-1H-P/1S-P-1NT-P/3C-P.
      2. When he is having 14-15 & 4-4-4-1 dist. with major singleton, he gives jump bid of of major i.e. 2S/3H on 1st relay of 1H by responder. e.g.1D-P-1H-P/2S/3H.

    2. Responder can give jump bids on three occasions viz.
      1. Limit raise of 2NT showing just 12 pts & bal. hand (e.g.1D-P-2NT-P/?).
      2. Jump to game i.e.1D-P-3NT showing 13-15 pts & no 4 cards major or
      3. Game force in major by giving jump in major suit showing 5 cards major & 13-15 pts.e.g.1D-P-2S/3H-P/?.

  3. Handling of Interference by opponents after 1D opening:-
    1. One/two/three level interference, either by suit call /NT or Dbl.,before response:-
      Dbl. or Redbl
      . by responder is always 1st round relay e.g.1D --int. by opp.-Dbl./Redbl. Opener has to reply accordingly to his holding.e.g. opp. by suit call --dbl.-P/1S/2H or 2S/3H as case may be, in case of having 4 cards major suit otherwise show 5 cards minor or NT according to his holding. Subsequent dbl. by Responder in case of further interference by opponents will be for penalties but next higher suit bid will be further relay.

    2. One/two/three level interference, either by suit call /NT or Dbl., after response:-
      In case interference is after 1st relay of responder then bid first 4 cards major, if any, otherwise bid 5 cards minor or NT as per holding. In case interference suit is opener's bid then opener should dbl. informing responder that his suit is same as that of opponent.