Strong Two Clubs Opening

This is our only strong opening suit bid.
(Two Notrump is the olnly strong Notrump opener, but
it's covered in the Notrump section, not here.)

Two Clubs is a 21+ HCP hand, or any hand with 9 or 9 1/2 tricks in it.
Many responses are artificial, as with most systems.

Virtually every duplicate pair uses this conventional
bid for strong suit openers, except Precision systems.