Editing Stayman convention (section)

===Non-promissory Stayman and 2{{Spades}} checkback by responder===

Some partnerships play that 2{{Clubs}} Stayman does not absolutely promise a four-card major (non promissory Stayman). For example, if responder has a short suit and wishes to know if opener has four-card cover in it, so as to play in no-trumps. If opener shows hearts initially, 2{{Spades}} can be used to find a fit in spades when the 2{{Clubs}} does not promise a four-card major.

1NT - 2{{Clubs}}, 2{{Hearts}} -
*2{{Spades}} = four spades, not four hearts, invitational
*2NT  = no four spades, invitational
*3NT  = four spades and game values
Alternatively 2{{Spades}} can be used for all hands with four spades and not four hearts, either invitational or game values, while 3NT denies four spades.