A Lebensohl auction takes place if the following conditions are met:

• there was a weak opening 2♣/2♦/2♥/2♠;

• there was a double of the partner;

• RHO passes.

Bidding depends on the suits shown by the opponent (answers, if possible):

• • 2♦/2♥/2♠ in an undeclared suit - natural, non forcing, 4+;

  • 2NT - weak with clubs or GF 4-5+ majors;

  • 3 in the opponent suit - in the suit of the opponent - strength cue bid;

  • 3♣/3♦/3♥/3♠ - in an undeclared suit - 9-12 HCP, invit, 5+;

  • 3NT - to play.