Aspro convention

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Not to be confused with Astro convention or Asptro convention.

Aspro[1] is a contract bridge bidding convention devised by Terence Reese[2] as a British variant on the Astro convention[3] to intervene over a 1NT opening bid.

Like Astro, Aspro is initiated by a 2-level overcall in a minor suit when the overcaller or intervenor[4] holds an unbalanced hand with at least nine cards in two suits (i.e. 5 in one and 4 in the other), at least one of which is a major.

  • 2 shows hearts and another suit, and
  • 2 shows spades and a minor suit.

Subsequent bidding[edit]

The foregoing includes the possibility that the 2 overcaller holds both majors. Using Aspro with five spades and four or five hearts, the 2 bid is followed by 2 over partner's 2 or 2; with four spades and five hearts, one rebids 2 over partner's 2.[3]

See also[edit]


  1. ^ The name is borrowed from a popular British brand of aspirin.
  2. ^ Manley, Brent, Editor; Horton, Mark, Co-Editor; Greenberg-Yarbro, Tracey, Co-Editor; Rigal, Barry, Co-Editor (2011). The Official Encyclopedia of Bridge (7th ed.). Horn Lake, MS: American Contract Bridge League. p. 267. ISBN 978-0-939460-99-1. 
  3. ^ a b Crowhurst, Eric (1980). Acol in Competition. London: Pelham Books. p. 290. ISBN 0-7207-1273-4. 
  4. ^ In the description of competitive bidding, players are referred to as either the Opener (the first to make a bid, the Intervenor (the opponent who makes his side’s first bid), the Responder (partner of the Opener) or the Advancer (partner of the Intervenor).