Minor Suit Transfers (MST) are used after a player has opened or overcalled a natural 1NT and his partner holds at least one six card minor suit, usually without a four-card major, unless holding a game-forcing hand. Minor Suit Transfers have several advantages over natural bids:
There are many variations of the MST and this is just one of them.
In response to 1NT:
|2|| 6+ clubs, asks partner to bid |
|2NT|| 6+ diamonds and asks partner to bid |
The purpose of the super-accept bid (or under-accept, as I like to call it) is to invite the responder to 3NT, with hopes of making at least 5-6 tricks in the minor.
Responder's rebids after
|Pass of 3||A weak hand with at least 6 clubs.|
|3 over 2NT||A weak hand with at least 6 clubs.|
|3//||At most singleton diamond/heart/spade, 11+ points.|
|4||Minorwood/invitation to game in clubs/slam try in clubs (depending on agreement).|
|4//||Quality side suit, at least 4 cards, slam try.|
|4NT||Quantitative invitation for a small slam in clubs or notrump.|
|5//||Exclusion Blackwood (or whatever the partnership agrees upon).|
|5NT||Quantitative invitation for a grand slam in clubs or notrump (bid |
Rebids after a diamond transfer are quite similar.
|Pass of 3||A weak hand with at least 6 diamonds.|
|3 over 3||A weak hand with at least 6 diamonds.|
|3/||At most a singleton heart/spade, 11+ points.|
|4||At most a singleton club, 11+ points.|
|4||Minorwood/invitation to game in diamonds/slam try in diamonds (depending on agreement).|
|4/||Quality side suit, at least 4 cards, slam try.|
|4NT||Quantitative invitation for a small slam in diamonds or notrump.|
|5||Quality side suit, at least 4 cards, slam try/Exclusion Blackwood.|
|5/||Exclusion Blackwood (or whatever the partnership agrees upon).|
|5NT||Quantitative invitation for a grand slam in diamonds or notrump.|
It should be noted that if playing MST, 2NT cannot be used as a balanced invitation to 3NT. A game invitation in notrump is made by bidding Stayman
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