MULTI
Multi is an opening system to show weak 2 in
a major suit or a strong NT(20-21 / 22-24).
This convention come in loads of different variations, but here I'm going to
list some version I have used.
In addition to weak 2 and strong NT, you can use multi as either of the
following:
(1) A minor suit and game forcing without side suit. The sequence 2C-2D-3C/3D
will then promise a side suit, and the suit above is used to ask which.
(2) Strong 4441. The suit above is Relay after numbers of controls (Ace=2 ,
King=1)
1 Step: 4-6 Controls , 2 Steps: 7 Controls.....
After the response of 1 Step, you can relay after the exact numbers of controls.
RESPONSES TO 2D OPENING:
2H: Not game if Weak 2 Hearts.
2S: Invitational if Hearts.
2NT: Forcing.
3C: Natural and forcing.
3D: Natural and forcing.
3H: Preempt in weak 2 suit.
3NT: To play.
REBIDS AFTER 2D - 2H:
Pass: Weak 2 Hearts.
2S: Weak 2 Spades.
2NT: Strong NT.
Extras for addition (1)
3C: Natural and game forcing.
3D: Natural and game forcing.
3NT: 25-27 HCP (Strong NT).
Extras for addition (2)
3C: 20-23 HCP and 4414 distribution.
3D: 20-23 HCP and 4144 distribution.
3H: 20-23 HCP and 1444 distribution.
3S: 20-23 HCP and 4441 distribution.
3NT: 24+ HCP and 4441 distribution.
4C: 24+ HCP and 4414 distribution.
4D: 24+ HCP and 4144 distribution.
4H: 24+ HCP and 1444 distribution.
REBIDS AFTER 2D - 2S:
Pass: Weak 2 in spades.
2NT: Strong NT.
3H: Weak 2 in hearts and minimum.
4H: Weak 2 in hearts and maximum.
Extras for addition (1)
3C: Natural and game forcing.
3D: Natural and game forcing.
3NT: 25-27NT
Extras for addition (2)
3C: 20-23 HCP with 4414 or 1444 distribution.
3D: Relay.
3H: 4414 distribution.
3S: 1444 distribution.
3D: 20-23 HCP with 4144 distribution.
3S: 20-23 HCP with 4441 distribution.
3NT: 24+ HCP with 4441 distribution.
4C: 24+ HCP with 4414 distribution.
4D: 24+ HCP with 4144 distribution.
4S: 24+ HCP with 1444 distribution.
REBIDS AFTER 2D - 2NT:
3C: Weak 2 Hearts. Minimum.
3D: Weak 2 Spades. Minimum.
3H: Weak 2 Hearts. Maximum. --> New suit Cue-Bid.
3S: Weak 2 Spades. Maximum. --> New suit Cue-Bid.
3NT: Strong NT.
Extras for addition (1)
4C: Natural and game forcing.
4D: Natural and game forcing.
Extras for addition (2)
4C: 4414 distribution.
4D: 4144 distribution.
4H: 1444 distribution.
4S: 4441 distribution.