Page 33 - 2 over 1 Game Force

Chapter 2: Minor Suit Opening 33

Third Suit Forcing

1♣ - 1♥ - 2♣ - 2♦; 1♦ - 1♥ - 2♦ - 2♠; 1♣ - 1♠ - 2♣ - 2♥; 1♦ - 1♠ - 2♦ - 2♥

1♣ - 1♦ - 2♣ - 2♥; 1♣ - 1♦ - 2♣ - 2♠; 1♦ - 1♥ - 2♦ - 3♣ (GF)

After opener rebid suit showing 12-15 hcp, responder bid new suit called third suit forcing

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Third suit forcing shows one round force with 3 card in bid suit
1♦ - 1♠

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2♦ - 2♥ = Third suit forcing, 3 ♥
Opener rebids
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• 2♠ = 3 card support
• 2NT = stopper in unbid suit (♣)

• 3♦ = non above

• 3♥ = 4-♥ (may maximum)

Fourth Suit Forcing (FSF)

When 3 suit have been bid and responder make a simple bid of fourth suit, that call is

artificial which doesn’t promise any length in the fourth suit and forcing to game. In the

exception of XYZ convention such as 1-1-1-2; 1-1-1-2; etc.

1-1-1-1; 1-1-1-2; 1-1-2-2; etc.
The main objective of FSF is the avoiding in notrump games with unstopped suits so the bid

of FSF to find out the stopper in that suit.
Responder rebids 2NT or 3NT with stopper in the 4th suit or naturally without stopper

or raising the 4th suit with 4-card support.

1 - 1♦ - 1 - 2♥

Opener rebids

• 2 = 12-15 HCP denies stopper 
• 2NT = 12-15 HCP stopper in 

• 3 = 12-18 HCP denies stopper in 

• 3 = 12-18 HCP 3 card ♦, denies stopper in 
th
• 3 = 12-18 HCP raise 4 suit show 4-card  but this case shows only 3-card 
• 3 = 16-18 hcp, 4⁺

• 3NT = 16-18 hcp stopper in 

2 over 1 Game Force | 2D Strong Balanced & Gazzilli