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 10 6
♥
A K 6
♦
Q 10 7 3
♣
Q 10 2
HCP: 15
Shape: 3-3-4-3
Balanced: yes
Planning
Jacoby Transfer: With 5+ card major, we bid 2D asking opener to bid 2H, or 2H asking for a transfer to spades. Then there are options. Let us say the suit is hearts. Then:- You bid 2 diamonds, and partner responds 2 hearts.
1. with 5 cards in hearts and 0-7 hcp pass, 8-10 bid 2NT, 11+, bid 3NT
Partner will know that you have 5 cards in hearts. Partner can see if there is a fit, and if there is, he can transfer back to hearts.
2. with 6 cards in hearts and 0-7 hcp pass, 8-10 bid 3H, and with 11+, bid 4H.
We know there must be a fit, because with a 1NT opening, there must be at least 2 of that suit.