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- Q4811524 subject Q8311206.
- Q4811524 abstract "Astro is a contract bridge bidding convention used to intervene over an opponent's one notrump (1NT) opening bid. The name is derived from the initials of the surnames of its inventors - Paul Allinger, Roger Stern and Lawrence Rosler.Astro employs a 2-level overcall in a minor suit when intervenor holds an unbalanced hand with at least nine cards in two suits, at least one of which is a major; hand strength should be unsuitable for, or not strong enough for a penalty double, typically no more than 15 points. The minor suit overcalls are artificial and carry the following meanings: 2♣ shows at least 5-4 or 4-5 length in hearts and a minor suit, and2♦ shows at least 5-4 or 4-5 length in spades and another suit.When playing Astro but not holding the prescribed two-suited hand, the following calls are available over the 1NT opening by the opponents:an overcall of 2♥ or 2♠ is natural showing a single-suited handDouble is for penalties↑ ↑ ↑ ↑".
- Q4811524 wikiPageWikiLink Q17115982.
- Q4811524 wikiPageWikiLink Q188966.
- Q4811524 wikiPageWikiLink Q2891197.
- Q4811524 wikiPageWikiLink Q4808228.
- Q4811524 wikiPageWikiLink Q4976954.
- Q4811524 wikiPageWikiLink Q5036151.
- Q4811524 wikiPageWikiLink Q5205876.
- Q4811524 wikiPageWikiLink Q8311206.
- Q4811524 wikiPageWikiLink Q955224.
- Q4811524 type Thing.
- Q4811524 comment "Astro is a contract bridge bidding convention used to intervene over an opponent's one notrump (1NT) opening bid.".
- Q4811524 label "Astro convention".
- Q4811524 seeAlso Q6615788.
- Q4811524 differentFrom Q17115982.
- Q4811524 differentFrom Q4808228.