The dealer on your right passes, you pass, and lefty opens two diamonds, Flannery, showing a minimum opening bid with four spades and five hearts.
This was passed back to East, who knew his partner had a minimum opening with fewer than three hearts because West would have doubled one spade with three-card heart support.
South's two-club overcall was not without risk, but it worked well; West passed, showing a minimum opening with fewer than three hearts (no support double); North also passed because South was a passed hand; and East (the "am") cautiously but understandably passed.
You know that South has a minimum opening bid with 6-3-3-1 6-3-3-1 6-3-3-1 6-3-3-1 shapeeton club).
(You look at the first three cards in each suit and count one loser for every missing high honor: ace, king or queen. A minimum opening bid with a five-card suit will usually have seven losers).
A minimum opening bid is assumed to contain seven losers.
Three clubs warned of a minimum opening bid.
A minimum opening offer of some £1.2bn was required.
Half had no minimum opening deposit requirement, and none had a minimum opening deposit of more than $100.
When West overcalled two diamonds, North passed to show a minimum opening bid.
