TWiB Lesson #594 (1 of 9)
There are two general categories of systems against the opponents 1NT opening bids – ones that use a Double as Penalty and others that use a Double as conventional. When the opponents open the bidding with a weak 1NT we need a good method for dealing with their unusual opening bid. The most common range for a weak NT is 12-14 points, but we define 1NT to be weak if the range does not contain 16 points. Some examples: 10-12, 11-13, 11-14, 12-14, 12-15, or 13-15 points. Against these opening bids we use a system that has a penalty double. Let’s look at one of the most interesting of these systems, Landy with Transfer bids.