phoenixmj, on 2019-September-20, 16:47, said:
The other day, we had this hand. We play a strong NT - 15-17 HCP. We will open 1N with a 5 card major.
Over 1NT - for minor transfers we play that 2S is a minor transfer, with the 1N bidder bidding 3c and then responder will correct to 3D if diamonds is the suit. If the suit is indeed diamonds, opener can pass the 3D.
Curious as to how you would approach this hand.
There are a large number of possibilities -- it depends on how your bidding system is structured.
Start with this thought: When partner opens 1NT, almost everyone has a way to show a weak hand with a major suit (transfer, then pass), an invitational hand with a major (transfer, then bid 2NT with five or 3M with six), a game-going hand with a major (transfer then bid 3NT with 5, or Texas transfer with six), and slam interest (transfer and bid a new suit, or transfer and splinter, or Texas transfer and then use key card)
In comparison, many partnerships don't have each of these situations covered. Your first step is to analyze your agreements, and figure out which hands you can show, and which you can't. Then you think about unused sequences and figure out if you can define some of those undefined sequences as a previously unshowable hand.
One structure that might work for you:
Over 1NT:
1N - 2C
2any - 2N : invitational to 3NT; does not have 44 fit with opener's shown major
1N - 2S - transfer to clubs
2N bad support for clubs
P Responder willing to play 2NT
3C - Weak hand with clubs, opener passes
3D/H/S - Slam interest in clubs, showing a singleton or void in the bid suit
3N Balanced slam try in clubs, non-forcing
4C Minorwood (key card ask in clubs)
1N - 2S - transfer to clubs or range ask.
3C Hxx or better in clubs
P Weak hand with 6(+) clubs
3D/H/S - Slam interest in clubs, showing a singleton or void in the bid suit
3N Balanced slam try in clubs, non-forcing
4C Minorwood (key card ask in clubs)
1N - 2N Transfer to diamonds
Opener's rebids:
3C - Bad support for diamonds
3D - Good support for diamonds (Hxx or better; some reverse this and 3C)
Over opener's 3C bid, 3D is to play.
Over opener's 3C or 3D,
3N = balanced slam try in diamonds
3H/3S/4C = unbalanced slam try in diamonds
4D: Minorwood (Key card ask in diamonds)
1N - 3D 55 minors; game forcing.
Opener's rebids:
3H: Agrees clubs with desire to play in a suit
3S: Agrees diamonds with desire to play in a suit
3N: Major suits well covered, desire to play 3NT
Now that scheme doesn't give you invitational hands with a minor, but it does give you the rest -- and often, knowing that opener has primary support for your minor is enough to let you bid 3NT on less than 25HCP.
Others play that 2C is nominally Stayman, but if responder then bids 3C or 3D, it's game forcing with slam interest in the bid minor.
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Assuming that the only way you can show either minor is to start with 2♠.
2♠ might also function as a range ask. Then
After 1N - 2♠ - ??
-- 2N = MIN.
-- 3♣ = MAX.
After 1N - 2♠ - any - ??
-- Pass/3♣/3♦/3N/6N = S/O. (Responder might not have a minor).
-- 3♥ = S/T with ♣s.
-- 3♠/4♣/4♦... = S/T with ♦s. e.g. the OP hand.