RuflRabbit Posted October 11, 2019 Report Share Posted October 11, 2019 I'm interested in gathering suggestions for methods when the opponents interfere with a natural 3-level suit call over our 2NT (20-21) opener. If it matters, if the opps interfere at the 3-level over our 1NT (15-17) openers, we play negative doubles and Texas transfers through 4♣. Thanks for your thoughts! Quote Link to comment Share on other sites More sharing options...
pescetom Posted October 11, 2019 Report Share Posted October 11, 2019 It doesn't happen often, nor is it much discussed:previous discussion If you are not playing at high level I would just maintain your 1NT methods with the modification that double or redouble by opener are for penalty. Quote Link to comment Share on other sites More sharing options...
dsLawsd Posted October 12, 2019 Report Share Posted October 12, 2019 Sounds right. The main thing to try and agree on is what a pass means. Does 3 NT show a full or partial stopper? Fun stuff, eh? Quote Link to comment Share on other sites More sharing options...
RuflRabbit Posted October 12, 2019 Author Report Share Posted October 12, 2019 Sounds right. The main thing to try and agree on is what a pass means. Does 3 NT show a full or partial stopper? Fun stuff, eh? Almost makes you want to interfere more with their 2NT. :) 1 Quote Link to comment Share on other sites More sharing options...
P0STM0RTEM Posted October 12, 2019 Report Share Posted October 12, 2019 Pescetom's link to Bob's suggestion about Pass being Forcing seems the way to go. Then opener I assume would overcall any 5 card suit at the 3-level and double failing that thus allowing a Penalty Pass conversion by responder. I'll take the bidding tree one step further:2NT 3 X ? Pass is Forcing Double generally without a Quality 5+ long suit Pass = Penalty Pass conversion Next Suit Up = To Play (no ability to transfer into it) Higher 3-level Suit = Invitational to 3N or 4M 3NT = Option to play w/ invite in what would have be next suit 3-level shows Quality 5+ long suit Double negative (up to 4♥) 3♦, 3♥ transfer to suit above 3♠ asks for stopper in enemy shown suit 3NT sign-off 4♣ Gerber 4♦, 4♥ transfer to major above, or splinter slam try if next higher suit is enemy suit 4♠ quantitative (16+-17) 4NT quantitative (15 to 16-) 2 Quote Link to comment Share on other sites More sharing options...
pescetom Posted October 12, 2019 Report Share Posted October 12, 2019 Pescetom's link to Bob's suggestion about Pass being Forcing seems the way to go. Then opener I assume would overcall any 5 card suit at the 3-level and double failing that thus allowing a Penalty Pass conversion by responder. I'll take the bidding tree one step further:2NT 3 X ? Pass is Forcing Double generally without a Quality 5+ long suit Pass = Penalty Pass conversion Next Suit Up = To Play (no ability to transfer into it) Higher 3-level Suit = Invitational to 3N or 4M 3NT = Option to play w/ invite in what would have be next suit 3-level shows Quality 5+ long suit Double negative (up to 4♥) 3♦, 3♥ transfer to suit above 3♠ asks for stopper in enemy shown suit 3NT sign-off 4♣ Gerber 4♦, 4♥ transfer to major above, or splinter slam try if next higher suit is enemy suit 4♠ quantitative (16+-17) 4NT quantitative (15 to 16-) Looks like an effective scheme. Out of interest, how would you handle 2 or 3 level interference over strong 2♣ ? Quote Link to comment Share on other sites More sharing options...
Zelandakh Posted October 22, 2019 Report Share Posted October 22, 2019 Looks like an effective scheme. Out of interest, how would you handle 2 or 3 level interference over strong 2♣ ?Fairly standard over a strong 2♣ opener is for Pass to show values and Double (or Redouble) to be a negative response, with suit calls being natural and positive similar to an uncontested auction. I think less standard is a 2NT response after interference. That is generally just played the same way as in an uncontested auction, whether natural or artificial, but another very logical usage would be a positive in the highest-ranking preempted suit, which can sometimes save a lot of space (eg after 2♣ - (2♠), 2NT instead of 3♥ as a positive with 5+ hearts gives 8 times as many possible auctions below the 3NT level, which is a considerable increase). Against that, many experts believe that the ability to split up the ranges of their balanced and semi-balanced positive hands is key to good slam bidding and that is certainly lost if all such hands have to start with a pass. Quote Link to comment Share on other sites More sharing options...
pescetom Posted October 22, 2019 Report Share Posted October 22, 2019 Fairly standard over a strong 2♣ opener is for Pass to show values and Double (or Redouble) to be a negative response, with suit calls being natural and positive similar to an uncontested auction. I think less standard is a 2NT response after interference. That is generally just played the same way as in an uncontested auction, whether natural or artificial, but another very logical usage would be a positive in the highest-ranking preempted suit, which can sometimes save a lot of space (eg after 2♣ - (2♠), 2NT instead of 3♥ as a positive with 5+ hearts gives 8 times as many possible auctions below the 3NT level, which is a considerable increase). Against that, many experts believe that the ability to split up the ranges of their balanced and semi-balanced positive hands is key to good slam bidding and that is certainly lost if all such hands have to start with a pass.Thanks. That's pretty much what we do at present, with 2NT retaining our usual meaning of both minors - I agree it would make more sense for it to become the highest-ranking preempted suit. We have multiple precise ranges for opener's NT after 2♣ so we leave any quantitative decision to responder. Quote Link to comment Share on other sites More sharing options...
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