Aspro convention (original) (raw)

Aspro is a contract bridge bidding convention devised by Terence Reese as a British variant on the Astro convention 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 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.