~Inverted Minors and Minorwood Paper

Inverted Minors
A common method for directly raising Opener’s minor suit is the “Inverted Minor” convention whereby 1♣-2♣ and 1♦-2♦ show the following:
~At least 4-card support in diamonds (5 card support in clubs)
~No 4-card major
~At least 10 HCP

Try these examples (after an opening bid of 1♦):
♠ K73, ♥ A853, ♦ KT96, ♣ 52
A 1♥ bid, do not make an Inverted Minors raise with a 4-card major.

♠ A73, ♥ KJ4, ♦ J982, ♣ QT7
A bid of 2♦ will work OK, but 2NT (11-12 HCP) is more descriptive.
♠ K6, ♥ A9, ♦ JT84, ♣ KQJ32
Bid 2♣,  creating a one-round force and initiating a similar showing of major-suit stoppers. Responder may choose to raise diamonds next round. #NT might work, but you hold two 2-card suits.
♠ 95, ♥ K92, ♦ Q985, ♣ AJ98
Make an Inverted Raise to 2♦
Follow-Up Method
A preferred follow-up method to 1♣-2♣ or 1♦-2♦ is:
– Show major-suit stoppers, attempting to determine if a NT contract is viable. Bid stoppers up-the-line. 1♦-2♦, 2♠ says “I have a spade stopper but not a heart stopper”. And 1♦-2♦, 2NT says “I have a stopper in both majors”. The 2NT bid denies enough HCP (13 or less) to have bid 3NT.

If responder shows one major-suit stopper (thereby denying the a stopper in the other major), opener
~With a stopper in the un-bid major, may bid NT. With 13 or less HCP, bid 2NT; with 14+ HCP and no slam interest, bid 3NT.
~Without a stopper in the un-bid major, opener can return to the agreed minor at the appropriate level.
~A third condition may exist: opener may hold a half-stopper in the unstopped major suit (K, Qx, Jxx). If opener wants to make a try for a 3NT contract but is willing to play in 4+ of the agreed minor if a combined stopper cannot be found, opener may bid three of the major suit in question at the 3-lvl, promising a half-stopper. If responder also has a half-stopper in the suit, responder is requested to bid 3NT. Without a half stopper, responder should return to the agreed minor suit at the appropriate level. If opener has too few HCP for 4 of the minor, opener can bid 3C, and responder can pass or bid 3D without a half-stopper, bid 3NT with a half-stopper, or raise the agreed minor.

Inverted Minors by a Passed Hand
Most partnerships play that Inverted Minors is still on by a passed hand. Subsequent bids have the same meaning as before, except opener may pass the Inverted Minor raise by a passed hand.

Inverted Minors in Competition
The common style is not to play the Inverted Raise after the opponents have overcalled:
– If an opponents overcall, with a strong hand and good support for opener’s minor suit, cue-bid the enemy suit.
– For bidding purposes, ignore the enemy double and make the same bid that you would have made had the opponent passed. This allows your partnership to keep your conventions intact.

Slam Bidding
If you are using 4NT for minor-suit Blackwood (or Roman Key Card), you may have noticed that it doesn’t work very well!
~ There is often too little bidding space between 4NT and 5 of a minor, so the response frequently gets the partnership to slam with insufficient controls. Example: clubs is the agreed minor. You bid 4NT, hoping partner has the two aces/keycards needed for slam. Responder has 1 Ace/keycard and responds 5D. Needing two Aces/keycards for slam, how do you retreat to 5C?
~A useful convention for use with slam interest in a minor suit is Minorwood.

4 of the agreed minor is RKC (1430 preferred) as in 1♦-2♦, 4♦, or 1♠-2♦, 3♦-4♦, or even 1♥-2♣, 4♣. To ask for Ks not already shown, use the cheapest unbid suit afer the Minorwood response. This allows 4NT and 5 of the minor as close-out bids when the Minorwood response shows too few controls. In competition, the Minorwood bid must be a jump to 4C/4D. 
~A further benefit of Minorwood is that, as shown above, the convention is not restricted to use after an Inverted Minors sequence but can be used even in competition. Partnerships should agree when such sequences are Minorwood. One simple system is to agree that in uncontested auctions, bidding four of partner’s minor or repeating your minor at the 4-level is always Minorwood and never an invitational bid. Other conventions exist that allow 4 of the minor to be invitational and 4 of some other suit to be used as Minorwood. One drawback is that using the other sui.t does not work well if that particular suit has already been bid by the partnership. Using the other suit may also unduly limit bidding space



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