When your partner opens the bidding with one of a suit, and an opponent makes a suit overcall, a double by you shows the unbid suits, in particular at least FOUR cards in any unbid major.
This double is also known as a negative or Sputnik double.
See www.bridgeclass.co.uk/TinyFil... for a 1-page summary of this.
Негізгі бет Ойындар Negative or Sputnik Doubles
Пікірлер: 5