Opener
Responder
Distribution
5+♠5+♥
3+♠
Strength
~3 EHT, ≤6 TL
4+ UH
→ slam bidding
maximum, ~3 EHT, 5♠5♥2♦1♣, ~6 TL
→ THEN 4♣/♦/♥ = control, partner can ask for key cards; 4♠ = to play, light slam try; 4NT = BW♠;
→ slam bidding
maximum, ~3 EHT, 5♠5♥1♦2♣, ~6 TL
→ THEN 4♣/♦/♥ = control, partner can ask for key cards; 4♠ = to play, light slam try; 4NT = BW♠;
→ slamm bidding
6511, 5-6 TL
→ THEN 4♣/♦ = Ace, partner can ask for key cards; 4♠ = to play, light slam try; 4NT = BW♠;
→ slam bidding
♣ void, 5530 or (65)20, ~6 TL
with stronger hand, the opener take initiative later
→ slam bidding
♦ void, 5503 or (65)02, ~6 TL
with stronger hand, the opener take initiative later
→ pass/(slam)
minimum, ~2 EHT, ~6 TL
→ slam bidding
BW♠