Bidding practice
The most widely-played natural bidding system in North America. 5-card majors, strong 1NT (15-17), strong 2C, weak twos, Stayman, and Jacoby transfers.
South is the dealer. No one has bid yet. What is South’s opening call?
South
♠
7 4
♥
A 8 3
♦
A K J 7 5
♣
Q 10 6
HCP: 14
Shape: 2-3-5-3
Balanced: yes
Planning
After partner opens and the next hand overcalls, responder uses a negative double to show the unbid major without overstating strength.