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The Raptor 1NT overcall over an opposing 1-level suit opening is a contract bridge convention 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. Followups:

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  • The Raptor 1NT overcall over an opposing 1-level suit opening is a contract bridge convention 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. (en)
  • Dwukolorowe 1BA (ang. "Polish 1NT", znane także jako "RAPTOR" - "wRAP around TORonto") to brydżowa konwencja licytacyjna. Została opracowana najprawdopodobniej w Polsce na początku lat osiemdziesiątych (lub jeszcze w latach siedemdziesiątych) XX wieku przez anonimowego autora. Według niektórych źródeł jest to szwedzka konwencja wymyślona przez Magnusa Lindvista, dodatkowo Kanadyjczyk Ron Sutherland opublikował tę konwencję w latach dziewięćdziesiątych pod nazwą "RAPTOR". Dwukolorowe 1BA hest popularna w Polsce konwencją obronną, po naturalnym otwarciu 1♦ pokazuje rękę w sile mniej, więcej 7-15PH z układem 5♣ i czwórką starszą, a po otwarciu 1♦/♠ pokazuje drugą czwórkę starszą i piątkę w kolorze młodszym. (pl)
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  • The Raptor 1NT overcall over an opposing 1-level suit opening is a contract bridge convention 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. Followups: (en)
  • Dwukolorowe 1BA (ang. "Polish 1NT", znane także jako "RAPTOR" - "wRAP around TORonto") to brydżowa konwencja licytacyjna. Została opracowana najprawdopodobniej w Polsce na początku lat osiemdziesiątych (lub jeszcze w latach siedemdziesiątych) XX wieku przez anonimowego autora. Według niektórych źródeł jest to szwedzka konwencja wymyślona przez Magnusa Lindvista, dodatkowo Kanadyjczyk Ron Sutherland opublikował tę konwencję w latach dziewięćdziesiątych pod nazwą "RAPTOR". (pl)
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  • Dwukolorowe 1BA (pl)
  • Raptor convention (en)
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