The Raptor 1NT
overcall over an opposing 1-level suit opening is a
contract bridge convention
Convention may refer to:
* Convention (norm), a custom or tradition, a standard of presentation or conduct
** Treaty, an agreement in international law
* Convention (meeting), meeting of a (usually large) group of individuals and/or companies in a ...
that indicates a two-suited hand with exactly four cards in the unbid major and a longer suit in an unbid minor.
The idea of utilising a 1NT overcall to denote a 5-4
two suiter seems to have originated independently in Sweden and Poland in the early 1980s. The name, however, comes from Ron Sutherland and his son who re-invented this approach and published it in a Toronto magazine in 1993 under the acronym "wRAP around TORonto" style.
When playing Raptor, an overcall of 1NT shows a 4 card major and a longer (5+) card minor. One of these suits will be known. For example:
(1) – 1NT shows 5+ diamonds and a 4 card major.
(1) – 1NT shows 4 spades and a 5 card minor.
Strength is a matter for partnership agreement. Compared with a natural 2-level overcall, the Raptor 1NT may be safe with fewer points, as it promises two places to play, and it may have a wider range, as it is forcing.
Followups:
* A bid of the known suit is to play.
* If the major suit is known, then advancer's cue bid shows a limit raise of the major (or better)
* If the major suit is unknown, then advancer's cue bid requests that opener bid his major, and may be weak.
* If the minor suit is unknown, 2 asks overcaller to pass (with clubs) or correct to 2.
* Other bids tend to show values in the suit, and suggest it as trump even if the overcaller is short.
See also
*
Unusual notrump
In the card game of bridge, the unusual notrump is a conventional showing a two-suited hand. It was originally devised by Al Roth in 1948 with Tobias Stone, to show the minor suits after the opponents opened in a major.
The convention conce ...
*
Michaels cuebid
*
Ghestem
*
Takeout double
References
{{DEFAULTSORT:Raptor Convention
Bridge conventions
ru:Конвенция (бридж)#Конвенция «Раптор»