Home

Fourth Suit Forcing

Fourth Suit Forcing  is a very useful convention which can be used as a one-round force or Game Force.  I prefer to use it as Game Force.  When 3 suits have been bid and you are "above" the one level, a fourth suit mentioned  in the auction may be "artificial" and is forcing.   Since the 4th suit mentioned here is not a true suit -- partner MUST have a stopper in that suit to bid NOTRUMP.   

Whether you play 4th suit forcing to game or one  round, responder is asking opener to further describe his hand.  If the partnership is playing this Convention as a  one-round force, responder would have to jump on his rebid to force to game.

Partner

Hand 1











pic  A5
picture 765
picture KQ765
picture A76
  picture
picture KJT86
picture KQ9
picture A
picture JT32

North

East

South

West

 -< Pass 1S Pass
2D Pass 3C Pass
3H* Pass 3nt Pass
Pass Pass Pass

South opens 1S. North knows that they have game values but is uncertain as to where to place the contract. 

The 3H bid by responder is Fourth Suit Forcing.  Since it is the fourth suit bid during this auction it says nothing about Hearts. 

The full meaning of the bid will be clarified on responder's next bid.  With a Heart Stopper South bids 2nt and North goes to Game.

Partner

Hand 2
pic 96
picture Q2
picture AK32
picture AQJ43
  picture
picture AQJ74
picture 87
picture QJ87
picture KT

North

East

South

West

Pass 1S Pass
2C Pass 2D Pass
2H* Pass 2nt Pass
3nt Pass Pass  Pass

South opens 1S. North knows that they have game values but is uncertain as to where to place the contract. 

The 2H bid by responder is Fourth Suit Forcing here and says nothing about Hearts.  With a Heart Stopper South bids 2nt and North goes to Game.




References:  Pattaya Bridge Club Reference