3 Way 1C Opening 10* +hcp (10 with good 6 card suit)

In this convention, when we open 1C with 10+hcp we always have 2+ cards in C and effectively have one of 3 possible hands:

 ·        10-14hcp balanced or semi balanced hand

 ·        15-17hcp balanced or semi balanced hand

 ·        Opening hand with 5+ clubs unbalanced 

 Note: 1C opening should be announced “(Unusual)” by partner as it may have longer Diamonds (up to 6 Diamonds).

 Response sequences to 1C openings

 Please note Lebensohl convention (described below) is used in the bidding sequences where opponent’s interfere and need to be understood.

 Partner responses to 1C opening

 If there is no interference, partner will initially show his high card points:

 1D <8hcp

 If partner opens 1C in 1st or 2nd seat and we don’t give point counts, we can use one of the two variations.

 Exception (not giving point count):

 If partner opens 1C in third seat (we already passed showing <7 hcp unless 6-4 in majors), answer is already known. We can use the following bids:


 Opener responses after 1D/1H/1S/1NT responses


 If after 1C, opponents X we simply ignore and bid as usual, if there is an immediate bid by opponents; partner will bid as follows:

 ·        Pass = with <6 points

 ·        X = take out and also shows 6+ points.

 ·        Any other bid is natural and non forcing

 In response to X, opener bids are as follows:

 ·        15-17hcp = 1NT after which transfer and Stayman variations are on

 ·        11-14hcp = Bid any suit with 4+ cards. Partner can pass or continue biding

 ·        Pass, converting to penalty

 Use of Lebensohl when partner’s strong 1NT opening is interfered

 This is a great convention. After a 2 level bid by opponents, responder’s 2NT bid simply ask opener to bid 3C. With Lebensohl, you simply need to understand a few principals:

 ·        Any immediate 2 level bid is weak, natural and sign off

 ·        Any immediate 3 level bid is strong, natural and game force

 ·        Any cue bid of opponents suit is Stayman

 ·        Any immediate bid (Cue bid or NT bid) shows no stopper in opponents suit (fast arrival)

 ·        Any delayed Cue bid or NT bid (after 2NT-3C Lebensohl sequence) shows stopper in opponent’s suit (slow arrival)

 When partner’s strong 1NT is interfered with a bid, following bids by us are Lebensohl convention:

 ·        X                                       Penalty

 ·        2 level bid                           Natural, weak to play

 ·        3 level bid                           Natural, forcing to game

 ·        Cue Bid opponents              Stayman, no stopper in opponents suit

 ·        3NT                                    Game force, no stopper in opponents suit

 ·        2NT                                    Lebensohl – Forcing opener to bid 3C

 In above sequences where Cue Bid or 3NT indicating no stopper, it is up to opener to change to appropriate suit or bid NT or leave it at 3NT with stoppers.

 Purpose of the 2NT Lebensohl is to describe other situations not covered above such as:

 ·        To sign off at 3 level (when it wasn’t possible at 2 level) with a weak suit

 ·        To bid Stayman and tell partner that we also have stopper at opponents suit

 ·        To bid 3NT game force and tell partner we also have stopper for opponents suit

 ·        To show a natural suit with invitational values

 Responder’s rebid after 3C by opener to describe above situations are as follows:

 ·        Any bid below 3 level of opponents suit = sign off (if C is our suit, responder will simply pass)

 ·        Any bid at 3 level above opponents suit = natural & invitational

 ·        Cue bid opponents = Stayman with stopper

 ·        3NT = Game force with stopper

 Notice difference between Cue Bid and 3NT bids when is done immediately after interference or after 2NT Lebensohl (slow bid). An immediate bid shows no stopper and a slow bid shows stopper.

  1D Opening  

 When 3 Way 1C opening is used, 1D opening would have at least 4 diamonds with a singleton or void in another suit (unless it is a 7-2-2-2 shape with 7 Diamonds). This is because for any other shape 1C opening is used.


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