(Stayman) - 2
(no major) - 3
asks partner to bid his 3 card majors up the line, with 3NT showing both 3 card majors unless the partnership permits 1NT openings on 2-2-5-4 or 2-2-3-6 etc types, in which case 3NT would show 2-2 in the majors.Extended Stayman
After 1NT - 2 (Stayman) - 2 (no major) - 3 asks partner to bid his 3 card majors up the line, with 3NT showing both 3 card majors unless the partnership permits 1NT openings on 2-2-5-4 or 2-2-3-6 etc types, in which case 3NT would show 2-2 in the majors.
This convention is also referred to as Weissberger.
Compiled by Lorne Russell 2005