Different bidding on all hands!!

Two passes to a standard East 13 HCP 1NT..

South has 2 choices: Double (15-18HCP)  or 2♥  

After X West will try to escape. The most common wriggles are based on 'Exit Transfers'. Where xx = ♣ s,  2♣ = ♦ s or Stayman, 2♦  =♥  , 2♥ =♠ , 

Make sure you have your partnership understanding on this, particularly 2♣ response. If this is Stayman - responses after the double are 'standard'.

Two partnerships bid 2♥  s for transfer, both partners did not recognise the transfer and passed. With one table this was passed out and 2♥  s went -5 and -250. On the other table South doubled again, which then gave West a chance to correct his bid! If you know the opposition have made a mistake (2♥  alerted as transfer to ♠ s, don't double if it allows them to escape. Though here -5 and -250 would not be a good result, as game is on.

Another table did the transfer to 2♠ and South cue bid with 3♠ to force North to bid who bid 4♥  which made. (With good ♠ stop he could have bid 3N - very agressive 3♠ recognising that opponents values were in ♠ s, so good probabilities for a fit in one of the other suits with a good % of the 30HCP deck (♠ s not counted). He who dares wins!