title: Hello convention
text: # Hello convention
  
  Hello is a bridge convention used for intervention over an opponent's 1NT opening. It allows for all one- and two-suited hands to be shown, and - for one suited hands - retains the ability to transfer.
  
  ## History
  
  The name of the convention is derived from the names two of its inventors, Jerry Helms and Bill Lohmann. Jerry Helms had previously co-developed "Helms", similar to the Cappelletti convention and saw this as an improvement to that convention. Helms considered that using 2♣ to show a major used up no bidding space and therefore lost the preemptive value typically attached to bidding major suits.
  
  ## Description
  
  It features the following calls:
  
  * Double is for penalty
  * 2♣ shows diamonds or a major-minor two suiter. Responder transfers to 2♦ which is either passed or advanced (diamond suit) or a major is bid (2 suiter, unspecified minor)
  * 2♦ is a transfer to hearts
  * 2♥ shows both majors (responder may pass or correct to 2♠)
  * 2♠ shows spades (natural bid)
  * 2NT is a transfer to clubs
  * 3♣ shows both minors (responder may pass or adjust to 3♦)
  * 3♦ shows both Majors with massive playing strength (responder takes a preference to 3♥ or 3♠, or jumps to 4♥ or 4♠ with supporting values)
  
  By design, in many cases, the advancer will become declarer, thus placing the strong 1NT hand on opening lead.
  
  