Quadri Livorno

3NT Blackwood

4§=No Ace

  Suit=ASK Controls

    #Resp.normal suit

    #Resp.unknown suit

    #Resp.long suit

4¨=1 Ace

  4NT=Which ace?

    5§¨©ª=Ace

  Suit=ASK Controls

    #Resp.normal suit

    #Resp.unknown suit

    #Resp.long suit

4©=2 Aces

  4NT=Which aces?

    5§=§+¨

    5¨=©+ª

    5©=ª+¨ OR ©+§

    5ª=ª+§ OR ©+¨

  Suit=ASK Controls

    #Resp.normal suit

    #Resp.unknown suit

    #Resp.long suit

4ª=3 Aces

  4NT=Which ace missing?

    5§¨©ª=Missing

  Suit=ASK Controls

    #Resp.normal suit

    #Resp.unknown suit

    #Resp.long suit