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
♠
K J 5 4
♥
7 2
♦
A Q J 8 3
♣
5 2
HCP: 11
Shape: 4-2-5-2
Balanced: no
Planning
With an intervening bid, south can still bid his 4c spade suit with 11 points. With 6-9 he can pass, as north still has an opportunity to bid again. Without the bid from east, and with 6-9 points, south would be obliged to bid.