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Jacoby 2NT (Swedish: Stenberg 2NT) is a bridge convention in which a bid of 2NT over partner's opening bid of one heart (1 ♥) or one spade (1 ♠) shows a hand with both opening strength or better - normally at least 12 HCP or a hand meeting the "Rule of 20" criteria, and; at least four-card support for opener's major suit.
It is initiated by an artificial and forcing 2 ♣ response by the passed hand to a 1 ♥ or 1 ♠ opening by partner. The 2 ♣ bid shows at least three-card support for opener's suit with 10-12 support points and asks opener to clarify the strength of their opening hand. The convention is also known in Europe as "Toronto".
The Jacoby transfer, or simply transfers, in the card game contract bridge, is a convention in most bridge bidding systems initiated by responder following partner's notrump opening bid that forces opener to rebid in the suit ranked just above that bid by responder. For example, a response in diamonds forces a rebid in hearts and a response in ...
A bid that shows insufficient values for a stronger response. For example, a 2 ♦ response to a forcing 2 ♣ opening bid is often negative, as is a 1 ♦ response to a Precision 1 ♣. Negative slam double In a competitive auction, the double of a voluntarily bid slam to show no defensive tricks, and therefore to suggest a sacrifice. Neuberg ...
In standard forcing notrump, responder with five spades bids 1 ♠ over opener's 1 ♥ but if she also has 2 hearts she does not then know whether to rebid 2 ♥ or 2 ♠. In forcing next step, opener will raise 1 ♥ - 1NT to 2 ♠ if she has support, so if she makes another bid, responder can happily give preference to 2 ♥ .
An opening bid of 2NT shows 20, 21 or 22 HCP. If responder has 13 HCP, then a small slam looks certain (13 + 20 opener's minimum = 33) and should be bid If responder has 11 or 12 HCP, then a small slam is a possibility but more information is needed about opener's hand before it should be bid.
4 ♣ is Gerber if it is a jump bid or if a suit has been agreed as trump. 4 ♣ is Gerber if the immediate preceding bid by partner was in notrump. 4 ♣ is Gerber only if it is a jump bid over an opening bid or rebid of 1 NT or 2 NT. (Standard American Yellow Card) 4 ♣ is Gerber only when in response to opening bids of 1NT, 2NT or a strong ...
1NT is "to play", it discourages game and denies 4 spades if in response to 1 ♥. 2 ♣ is artificial and forcing; shows prospects for game; denies 4 spades if in response to 1 ♥. Direct raise of the suit is preemptive and sign-off. All other bids are "natural" and to play. Responses to 1NT 2 ♣ is a game-forcing relay asking for distribution