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Jump change of suit response [not having previously passed] after partner opens one of a suit?

In the 'old days' this was used reasonabley frequently. I was taught to use it with 16+ points as game forcing. In recent times I'm told this is modified to - 'use it only if you are sure what suit you will be playing in'. It seems to be almost frowned upon now as using up too much bidding space.

Are there any better uses for this bid [for the average club player]?

John Workman


  • edited 12:37AM

    I'm not sure that there has been any "recent" change. But the standard approach in Acol is that a jump response should promise:

    • 16+ and a good self supporting suit - the type you would be happy to play in opposite a singleton. A good quality six-card suit.
    • Or, 16+ with a five-card suit and support for partner.

    You clarify which of these two hand types you hold at the second bid: with the self supporting suit you re-bid it, but bid partner's suit with the second hand type. In both cases you know which suit you want to play in and it helps to establish this early so that you can then search for any potential slam.

    In both cases you take up bidding space, but give a clear and concise message to partner. If you jump with any strong hand (but no clear idea which suit to play in), you can still be searching for the best suit (or no trumps) at too high a level. It is better to take things more slowly.

    It is possible to play the jump in the new suit as weak and pre-emptive. It can be effective if only used for very weak hands where you have a clear message for partner that your hand will be of no use in any other suit contract.

    But this does give up a useful bid, which facilitates accurate slam bidding!

  • edited 12:37AM

    That's most informative.

  • edited July 2014
    The end of the world won't come if don't play strong jump shifts at all. And American style Weak Jump Shifts (6-card suit 3-5hcp) seem to have fallen out of fashion, probably for a good reason.

    If you play weak NT and 5-card majors you can use the minor suit jumps as Bergen raises.  And there is an interesting gadget that uses the major sut jumps after an opening 1C or 1D.

    This is Reverse Flannery. It caters for hands 5-11hcp with exactly 4 hearts and 5 spades.  Normally with that hand you respond 1S (your longest suit) and find you have missed the heart fit.  Else you bid hearts and never mention your 5-card spade suit. 

    With Reverse Flannery respond to 1minor with 2H showing this shape with 5-8hcp and 2S with that shape and 9-11hcp.  Partner will then be in a very good position to place the final contract with the next bid.   There are resources on the web about this and detailed continuations if you want them.
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