When the opponents stay out of our auctions then we usually have clear agreements about the meaning of a 4NT bid – usually Quantitative in a NT auction and Keycard in a suit auction. But in a competitive auction we are more likely to use 4NT as a bid showing 2 places to play. Let’s look at some of these auctions so we know what partner is trying to do to when they use 4NT in a competitive auction.
(550) Competitive Auctions: Leaping Michaels
When RHO opens a 2-level preempt, they have started eating up our valuable bidding space. But this is just the start of their attack on us. LHO may join in the attack and raise the preempt, making our life even more difficult. When we are bidding over RHO’s 2-level preempt we should keep this in mind. We need lots of tools to deal with this situation. Let’s look at these options.
(549) NT Bidding: Slam Tries After Stayman
One of the most common gadgets that we use when partner opens 1NT is Stayman. We primarily use Stayman to search for a 4-4 Major suit fit. After Stayman sometimes we want to have a way to raise partner’s suit where they cannot pass. We will want a “Forcing Raise” (similar to Jacoby 2NT or Inverted Minors) in order to find out more about Opener’s hand. This is missing from a standard bidding system. It is a valuable tool for making a slam try while keeping the auction from getting too high.
(543) NT Bidding: Penalty Double Systems vs. NT Openings
When the opponents are playing a “Weak 1NT” opening bid (for example, 12-14 points), we need to bid only when we have a decently valued hand. We tend to bid with hands that would normally have overcalled at the 2-level, hands with about opening values. Here we are primarily bidding constructively because when the opponents open a “Weak 1NT” our side may still have game. If we bid destructively (with only shape and without much strength) then if partner has values, they may push the auction too high. It is common to use a different bidding system against the opponents’ Weak 1NT opening bid than the one you use against a strong 1NT opening. These systems usually contain a penalty double that allows us to show a very good hand as well, and thus penalize the opponents when partner also has some values.
(541) NT Bidding: DONT and Meckwell
(537) Slam Bidding: Responding to 4NT Keycard with a Void
When partner bids 4NT as Keycard in our established fit, a void in a side suit can be useful. We may still be able to make a slam if we are missing two Aces/Keycards if the void is in a suit of one of those missing side Aces. We need a way to tell partner about this void if we haven’t already done so earlier in the auction.
(536) Slam Bidding: Dealing with Interference Over Ace-Asking Bids
On some highly distributional hands when we ask for Keycards (or Aces) using 4NT, the opponents choose to bid over our 4NT bid in an effort to obstruct our communication and “get in the way”. We should be prepared for this type of interference and have agreements for how to communicate with partner (show our number of Keycards or Aces) in this situation. Here we look at how to do this.
(535) Slam Bidding: 5NT Choice of Slams
5NT is not a common bid. We most frequently use it in Ace-asking auctions to ask for Kings. We now have another use of a 5NT bid in Grand Slam Force. But trying for a grand slam is a rare occurrence and we would like to use 5NT (specially a jump to 5NT) for another more frequently useful purpose. The modern approach is to play a jump to 5NT as a “choice of slams” to help up find the best small slam. Let’s see how this works.
(529) Fits and More: 2NT Trump Suit Game Try - Spiral
(523) NT Auctions: Puppet Stayman and 5-Card Stayman
(522) NT Auctions: 2S Size Ask Response
(520) NT Auctions: Opponents' Doubles of Our Stayman and Transfers
(517) NT Auctions: 3S Minor Suit Slam Try After a 2NT Opening Bid
(503) Middle of the Hand Defense: Surround Plays and Power Shifts
(495) Advanced Card Play: Smother Play
(494) Advanced Card Play: Endplays
(484) Competitive Bidding: Leaping Michaels
(483) Competitive Bidding: Competing Over 2-Level Preempts - Lebensohl
(477) Defensive Carding: More Suit Preference
(475) Defensive Carding: Smith Echo (Reverse)
Against a NT contract, when the opponents win the first trick and attack another suit they are often leading their best suit. In this case, we have an opportunity to communicate with partner. Smith Echo is an agreement that makes use of this situation to tell partner if the opening lead was good or not.