Game invitation

1§    -             1ª
2§    -              ?

                      - 2NT              : balanced or semi-balanced, five spades possible
                      - 3§                : invitation at least Hx support, five spades possible
                      - 3¨               : (5-5)
                      - 3©                : (5-5)
                      - 3ª                : 6+ cards

Slam try in opener suits

1§    -             1©
2§    -              ?

                      - 3ª                : splinter
                      - 4¨               : splinter
                      - 4§                : RKCB

After splinter, turn to NT or suit shows bad hand, new suit bids at four level show good hand.

Suit bids at five level show number of key cards (start 5§) and very good hand.

3^rd suit forcing

Used for:

- learning three card fit

- learning stopper unbid suit
- learning strength and distribution
- forcing sequences!

Normally used with good unbid suit, but if you think slam, used with economic unbid suit. If you think, partner possible has four card in 3^rd suit, use 3^rd suit with 13+ HCP.

1§    -             1ª
2§    -              ?

In this case, partner possible four diamonds or four hearts; and if you use 3^rd suit, you must have minimum 13+ HCP or four cards in this 3^rd suit.

Bid 2© with (AJ984,AK3,742,Q6) or (AQ652,KQ107,85,93)

1§    -             1©
2§    -              ?

Now, partner doesn’t have four spades and for 3^rd suit good 11 HCP enough.
Bid 2ª with (AJ10,AQ1084,762,83)

Opener rebids, against 3^rd suit

1§    -             1ª
2§    -             2©
 ?

- 3©                : four card support, can be minimum or maximum, forcing
- 2ª                : Hx or three card support with minimum hand, non-forcing
- 2NT              : stopper in unbid suit, non-forcing
- 3§                : long good clubs, non-forcing

- 3¨               : shows maximum, no three card fit and no good stoppers

- 3ª                : maximum with three cards
- 4§                : (3-3-1-6) maximum
- 4¨               : (3-4-1-5) maximum
- 3NT              : maximum with good stoppers in unbid suit

1§    -             1ª
2§    -             2¨
 ?

- 3¨               : minimum with four card fit, non-forcing

- 2©                : maximum, four card diamond possible
- 3©                : three card fit in spade with singleton heart, (3-1-3-6) shape

1¨   -             1ª
2¨   -             3§
 ?

- 3ª                : three card fit, minimum or maximum, forcing
- 3NT              : stopper in heart, minimum or maximum
- 3¨               : minimum hand, no three card fit and no good stopper in heart
- 3©                : no three card fit and no good stopper in heart, but maximum

1§    -             1¨
2§    -             2©
 ?

- 3¨               : minimum with three card fit, non-forcing
- 3©                : maximum hand with three card diamond fit

- 4§                : maximum hand with three card diamond fit and singleton in unbid suit (1-3-3-6)
- 2ª                : maximum hand not three card fit and no good stoppers

Responder 3^rd bids

- responder can pass opener’s non-forcing rebid
- rebid 3^rd suit shows (5-5) and forcing
- rebid 4^th suit, generally looking NT. and forcing
- raise supporting or rebidding suit below game is slam try
- rebidding responding suit below game is forcing

Attention!

If opener rebid 4^th suit
- turn responding suit or rebid 3^rd suit is forcing
- but return opener minor in three or four level with non jump is non-forcing. Because responder

  can’t Pass 4^th suit and may no other choice with 11 HCP.

1§    -             1ª

2§    -             2©

3¨   -             4§                  with (AQ652,KQ103,XX,XX) and non-forcing