Three Level Response To 1 No Trump - Many methods have been developed
in response to opener's 1 Notrump bid. Here are some of the common
conventional 3 level responses:
A game forcing, slam
invitation bid promising a long, strong suit.
A preemptive bid, showing a
long broken suit typically only holding broken entries in the minor
1N - 3D
Showing either a forcing or
invitational game in the major suits.
1N - 3H
Shows a 5-5 invitational hand
1N - 3S
Shows a 5-5 forcing hand
A game forcing bid showing
a singleton or void in the bid suit and promising long minors, allowing
opener to consider a minor suit game without the appropriate stopper in
the splinter suit.
3S; 3S is a short suit since opener did not make a 3N bid,
4C - 5C; with the players finding a minor suit game
An alternative treatment
(to 2C), where Responder shows game-going values and asks Opener to
identify either a 5 or 4 card major.