The dealer's overcalls after an initial pass and a single adverse bid.
They require 8-10HCP in an interesting hand.
The main overcalls are:
- The double which guarantees 8HCP and 4 cards in each of the other suits.
- 1NT which promises a minor two-suiter.
- A major with jump promises a major two-suiter 6-4. It wasn't possible to open a weak two with four cards in the other major.
- The cue bid of the opening minor promises 5-5 in two undetermined suits.
An example of an overcall by the first player after an initial pass. Here, 1NT shows a weak minor two-suiter.