The minor/major double
This is the most frequent two-suited overcall after a 1NT opening. (There are 4 possible combinations...against only one for the Landy!) It promises:
- A minor of at least 5 cards, a 4 card major,
- at least 10 or so HCP and, above all, the high cards concentrated in the long suits.
Remember, to overcall after a 1NT opening, distribution is more important than the number of points.