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
♠
A K 7 5 3
♥
K 6
♦
Q 9 2
♣
K 8 3
HCP: 15
Shape: 5-2-3-3
Balanced: yes
Planning
Responder uses a splinter bid to show game-forcing support, shortage and slam interest, allowing opener to revalue honour cards.