SNTSNT7

With 5-4 in Majors if responder starts by using Stayman even though hand is weak does opener have to alert? What is the best source on Alerting rules?

How can South know that N is void in Hearts?

4C just showing long Clubs? What are the following bids?

North (Dealer) S Q4 H ---- D KQ109 C AKQJ1082 South S AK5 H J10762 D AJ8 C 65

Thank you! Would it be reverse in 2/1?

ahydra, I actually like jumping with 5+ suit, too. But what do you do with 9-11 hands with no 5-card suit to jump in?

Thank you all! What if doubler has minimum TOD strength with three not so good looking hearts and four spades? There could be much better Spades fit than Hearts. Can't 2H bidder figure out that partner is very unlikely to have Double-and-Bid strength?

1H-Pass-2C-Pass-2S. In SAYC is this a reverse?

1C-Dbl-Pass-2H-Pass-2S What is meaning of 2S by the doubler? Very strong hand with 5 Spades? No Heart support and just 4 spades? Thank you!