The Battle of France happened during the winter.
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 .. Terence Reese. Terence Reese. opening bid. Contract bridge glossary#O. 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 -LRB- i.e. 5 in one and 4 in the other -RRB- , at least one of which is a major .. 2 shows hearts and another suit , and. 2 shows spades and a minor suit .