A method of responding to a 2NT enquiry following a weak-two opener in a major. The ‘Blue Club Responses’ (also known as ‘Ogust’ responses) are:
For a suit to count as good it normally needs two of the top three honours or perhaps K-J-10-9-x-x. Minimum and maximum will depend upon the range of the weak two. If that is 5-9, minimum will be 5-7 and maximum a good 7-9.