IN this article, I will look at an effective yet relatively straightforward convention: Landy. Originally the idea of Alvin Landy, it is a convention which allows an over - caller to show a two-suited hand following an opening bid of 1NT. In a nutshell, by bidding 2♣ over the opening 1NT, the overcaller shows that he holds both majors.
Why is it useful to play a conventional defence to an opening bid of 1NT?
The main disadvantages in playing a natural defence lie in the frequency with which one can disrupt the auction as an overcaller, and the ability to find the best fit available.