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Andrew’s favourite conventions (nine)

One of my absolute favourite conventions – it is simple, effective and happens frequently – is “Jacoby”. After partner has opened 1 /1 ♠ and the next player has passed, a response of 2 NT shows at least game-going values with four or more cards in support. Playing 2 NT as 10-12 points and a balanced hand is unwieldy – you can always bid 2 ♣/2  instead. But 2 NT as Jacoby, setting trumps at a low level and allowing for a slam exploration via Trial Bids (new suit bids at the lowest level) and Splinter bids (jumps in new suits), is an invaluable tool.

South Deals
N-S Vul
A J 5 3 2
7 4 2
A Q 7
K 3
Q 10 9
K Q J 3
10 8 4 2
9 7
N
W   E
S
A 10 9 6 5
9 5
10 8 6 5 4 2
 
K 8 7 6 4
8
K J 6 3
A Q J
West North East South
      1 ♠
Pass 2 NT Pass 4 
Pass 4 NT Pass 5 
Pass 6 ♠ End  

 

North’s 2 NT response showed at least a game going hand with four + ♠s. With a minimum opener South would jump to 4 ♠ - his actual 4  bid was a “Splinter bid” showing a slam-interested hand with a singleton . North’s  742 ceased to be a problem so he used “Roman Key Card Blackwood”. South’s 5  response showed two of the five aces (counting ♠ K as an ace) but no ♠ Q.
West led  K against 6 ♠, and continued with  Q. Declarer trumped and had only to avoid losing to ♠ Q to make his slam. In order to retain a possible finesse position (♠ AJ) he carefully cashed ♠ K at trick three. When East discarded he was able to play ♠ 4 to ♠ 10 and ♠ J. He drew West’s ♠ Q with dummy’s ♠ A and claimed the remainder.

ANDREW’S FAVOURITE CONVENTIONS (9): Jacoby

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