spil Posted March 6, 2021 Report Share Posted March 6, 2021 1C 1H1S 2C3C 3DWhat is 3D? Quote Link to comment Share on other sites More sharing options...
hrothgar Posted March 6, 2021 Report Share Posted March 6, 2021 1C 1H1S 2C3C 3DWhat is 3D? Let's see 2♣ was natural and non forcing3♣ is showing extras, but is not forcing Partner could have bid 3N, but did not I would take it as values for game, doubt about NT, inferentially asking about a Diamond stopper. 1 Quote Link to comment Share on other sites More sharing options...
morecharac Posted March 7, 2021 Report Share Posted March 7, 2021 1C 1H1S 2C3C 3DWhat is 3D?Standard American and its offshoots predominate in my area. Most pairs play it as asking for a diamond stopper; bid 3NT with, rebid something else without it. Or they could be showing 0=4=4=5 shape because they skip diamonds to show a four-card major at the one level and want to let partner choose where to go. Opener probably has something like 4=2=2=5 or 4=2=3=4. We play it as showing a diamond stopper and preferring partner play the NT game if that's where we belong. It's always felt more natural to me to promise a stopper than to ask for one. In that auction, if partner can bid 3NT that's where we belong, otherwise I'd aim for 6♣ and stop at 5 if partner shows 0 keycards, one advantage of playing 3014. 6NT might be there but unless there's a feasible way to control cuebid I'll take the chance on a middle board by choosing a suit slam. Quote Link to comment Share on other sites More sharing options...
Zelandakh Posted March 8, 2021 Report Share Posted March 8, 2021 I would take it as values for game, doubt about NT, inferentially asking about a Diamond stopper.This much is clear. The question, which varies between partnerships, is whether it asks for a full stopper or only a half-stop. If the latter then you typically need to bid 3♥ or 3♠ when requiring a full stop. As far as I know, there is no absolute international agreement on this distinction. Some pairs still play it as a transfer to 3NT, typically with an anti-positional stopper. I am not sure if any current top pairs use that method but if you look at old books or around the web, you can find plenty of chat about this style. 1 Quote Link to comment Share on other sites More sharing options...
DavidKok Posted March 8, 2021 Report Share Posted March 8, 2021 One question on this sequence is what shape(s) opener can have on this auction. I would bypass a four card spade suit with a balanced hand, so 1♠ shows 4(+)♠, 5(+)♣ unless 4=1=4=4 (and some partnerships would open the 4=1=4=4 hand with 1♦, so it is not a consideration). Therefore the 3♣ rebid would promise extra length in the club suit, and denies a good diamond stop by inference (2♦ and 2NT were available, the former showing values and the latter showing a good stopper) - especially since responder can have as few as 3 clubs on this auction. With this much known of opener's hand the 3♦ asks for half a stopper, such as ♦Qx. Conversely, if the spades cannot be bypassed on the 1-level there is a risk opener is balanced (and might have as few as 3 clubs). Then responder has shown length by giving preference to 2♣ over 1NT, and the raise may be based on something like a 4th club to inform responder that the suit might run. In that scenario 3♦ would merely mean 'my hand just got worth a lot more, but diamonds are a problem', and requests anything from a full to a double stop in the suit. Quote Link to comment Share on other sites More sharing options...
paulg Posted March 8, 2021 Report Share Posted March 8, 2021 I keep on changing my mind, which suggests it would be a problem at the table :) The mistake is to try and cope with all the hands, since there will be N+1 when there are only N, or fewer, bids available. It is not realistic for diamonds to be a contract (partner could be 4036 but could have bid two diamonds with this), so you do not need a natural three diamonds here. Also, If you are making a move, then it makes sense that you need at least a half-stop in diamonds. This lets responder bid 3♥ with a half-stop in diamonds and five fair hearts (where 4♥ is good opposite a doubleton honour). It leaves 3♦ by responder to show either show a half-stop in diamonds with a suitable hand or a full stop in diamonds with concern about hearts. Opener can continue with three hearts with some support but needing a full stop in diamonds, three spades without help in hearts but help in diamonds, or three no trump with both. Quote Link to comment Share on other sites More sharing options...
pescetom Posted March 8, 2021 Report Share Posted March 8, 2021 The question, which varies between partnerships, is whether it asks for a full stopper or only a half-stop. If the latter then you typically need to bid 3♥ or 3♠ when requiring a full stop. As far as I know, there is no absolute international agreement on this distinction. In Italy the latter is pretty much standard. Quote Link to comment Share on other sites More sharing options...
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