New Minor Forcing in Bridge Bidding
How to find the right contract after opener rebids 1NT
New Minor Forcing (NMF) is a powerful convention used when opener bids a minor suit, you respond with a major, and opener rebids 1NT. For example, after 1♦–1♥–1NT, opener has shown a balanced hand with roughly 12–14 HCP. But what if you need more information? Do they have 3-card support for your major? What is their exact hand shape?
The answer is to bid the other minor—the one opener did not open. In this example, you would bid 2♣. This is an artificial and forcing bid that says nothing about your club holding. Instead, it asks opener to further describe their hand, helping you find 3-card major support or determine the best game contract.
When to Use New Minor Forcing
Use NMF (bid the other minor after opener's 1NT rebid) when you have:
- 11 or more high card points (invitational strength or better)
- A 5-card major suit you bid at your first turn
- A need to know if opener has 3-card support for your major or further details about their hand shape
Requirements at a Glance
- Points: 11+ HCP (invitational or better)
- Shape: Typically a 5-card (or longer) major you have already bid
- Trigger: Opener bids a minor and then rebids 1NT (e.g., 1♣–1♠–1NT or 1♦–1♥–1NT)
- Partnership agreement: Some play NMF as one-round forcing; others play it as game-forcing. Discuss this with your partner!
The Bidding Sequence
Step 1: Opener bids a minor suit
Opener starts with 1♣ or 1♦, showing a hand with at least 12 HCP and length in that minor.
Step 2: You respond in a major suit
You bid 1♥ or 1♠, showing 6+ HCP and at least a 4-card major (often 5 cards when NMF is relevant).
Step 3: Opener rebids 1NT
Opener shows a balanced hand with approximately 12–14 HCP. This denies 4-card support for your major (with support, opener would raise).
Step 4: You bid the other minor (NMF)
You bid the minor that opener did not open. This is artificial and forcing—it asks opener to describe their hand further.
| Auction | NMF Bid |
|---|---|
| 1♦–1♥–1NT | 2♣ (the other minor) |
| 1♦–1♠–1NT | 2♣ (the other minor) |
| 1♣–1♥–1NT | 2♦ (the other minor) |
| 1♣–1♠–1NT | 2♦ (the other minor) |
Step 5: Opener responds to NMF
| Opener's Response | Meaning |
|---|---|
| Raise responder's major to 2-level | 3-card support for responder's major, minimum hand |
| Raise responder's major to 3-level | 3-card support for responder's major, maximum hand |
| Rebid 2NT | No 3-card major support, minimum (12–13 HCP) |
| Rebid 3NT | No 3-card major support, maximum (14 HCP) |
| Bid a new suit | Shows a stopper in that suit (useful for notrump placement) |
Example Hand
Your Hand (South)
♥ K 7
♦ J 8 5
♣ Q 10 4
HCP: 13 | Shape: 5-2-3-3 | 5-card major: Spades
The Auction
| North | South (You) | Explanation |
|---|---|---|
| 1♦ | 12+ HCP, 4+ diamonds | |
| 1♠ | 6+ HCP, 4+ spades | |
| 1NT | 12–14 HCP, balanced, denies 4 spades | |
| 2♣ | New Minor Forcing—"Tell me more about your hand" | |
| 2♠ | "I have 3-card spade support, minimum" | |
| 4♠ | Game! You found the 5-3 spade fit with 25+ combined HCP |
Common Mistakes
- Using NMF with fewer than 11 HCP: New Minor Forcing commits the partnership to the 2-level or higher. With a weak hand, simply pass 1NT or bid 2 of your major as a sign-off.
- Bidding the same minor opener bid: If opener bid 1♦, bidding 2♦ is not NMF—it is a preference or natural bid. NMF is specifically the other minor.
- Forgetting your partnership agreement: NMF can be played as one-round forcing or game-forcing. Make sure you and your partner agree on which treatment you use before sitting down at the table.
- Using NMF with only a 4-card major: If you have exactly 4 cards in your major, opener has already denied 4-card support by rebidding 1NT. NMF is most useful when you have a 5-card major and are looking for a 5-3 fit.
Practice New Minor Forcing with AI Opponents
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