Reference
Bridge bidding systems
Partnership systems, side by side. Pick one to read the opening bids, responses and conventions.
System
1517
15-17 NT, 5-card majors, three weak twos. Four-suit transfers, Roman Key Card 1430, standard pre-empts.
1♣1♦1♥1♠1NT2♣
System
1214
12-14 NT, 4 card majors and 3 weak 2's.
1♣1♦1♥1♠1NT2♦2♥2♠
System
Weak and Reverse
Weak no-trump with reverse Benji. Openings, responses and conventions in full.
1♣1♦1♥1♠1NT2♣