JACOBY 2NT RESPONSES TO 1 MAJOR


In a 5-card major system, the 2NT response has no natural meaning, so it can be put to an alternative use. It basically can be used as a flat game forcing hand in the major, with a view to exploring slam possibilities. (This is not quite true within a 4-card major system, but the change is still well worth it).


So a summary of support responses to 1:

2 - limit bid 5–8 points (or 9+ losers)


3 - limit bid 11–12 points (or 8 losers)


2NT – Jacoby response – 13+ points with trump support (see below)


4 - pre-emptive 7–10 points


Splinter bids (3♠, 4♣, 4) – singleton or void plus trump support.


If not using ‘losing trick count’, with 9-10 points change suit and show delayed support.


3NT – balanced 13+ points no heart support (three cards or less). (This could of course be passed if responder also has a balanced hand, particularly in pairs) A bid to avoid.


2NT  (Jacoby response):


Shows 13 + points – game forcing – support for major Shows 13 + points – game forcing – support for major (4+ cards - 4-card major; 3+ cards with honour - 5-card majors). This hand usually controls the contract thereafter.


The opener’s responses focus on showing shape as follows (assume 1 opening):


3♣, 3, 3♠ - singleton or void in the suit 13+ points.


4♣, 4, 4♠ - secondary good four/five card suit – a source of tricks


3NT – intermediate hand 15-16 points, with no singleton or void.


3 - strong hand 17+ points, with no singleton or void.


4 - all other minimum hands (12-14 points).


Note:


- with a minimum (11) opening bid, and a singleton or void, don’t show the feature. If responder is particularly strong he can bid again.

- with a good secondary four/five card suit and a singleton or void, give preference to showing the four/five card suit (remember this also implies a singleton or void).

- same applies for 1♠ opening


Examples:


a)♠ 2♠ A73


KJ984 Q1072


AJ872 KQ


♣ A8♣ K953



1                            2NT

4 (5 card suit)         4NT (RKCB)

5 (3 key cards)       6


Over the 2NT, opener shows his second suit. Responder’s KQ are now very useful. With one key-card missing, settle for the small slam.


b)♠ AK2♠ QJ3


KQ984 AJ72


QJ72 84


♣ 8♣ KQJ3



1                            2NT

3♣                            4


Opener shows the singleton club, which is not to responder’s liking. Settle for 4. With a better hand he may progress.


c)♠ AJ2♠ KQ3

K10984 AJ72


QJ72 84


♣ 8♣ A973



1                            2NT

4                            pass


Opener shows a minimum hand rather than showing the singleton. With A instead of Q (13 points), show the singleton club.


d)♠ A2♠ KQ3


KQ984 AJ72


AK73 84


♣ 86♣ A973



1                            2NT

3NT                         4♣ (cue)

4 (cue)                    4

4♠ (cue)                    4NT (RKCB)

5 (3 key cards)       6


Action Over Opposition Bid Over 2NT


Example - 1 - pass – 2NT - 3


Double           - singleton (in clubs)

4♣                  - void in clubs

3                  - 17+ points with a club stop (A, Kx, Qxx)

3NT               - 15-16 points with a club stop

4                  - 11-14

Pass               - forcing (any strength)




AFH