1NT Forcing (aka el NT Forcing Notrump) is a cornerstone of the 2/1 (“Two Over One”) bidding system. After partner opens 1
/
, a 1NT response shows 6-12 HCP and is a one-round force.
In standard bidding methods, a 1NT response shows 6-10 HCP. Playing 2/1, however, this range must be widened to include the game-invitational 11-12 point hands that are ineligible for a game-forcing 2/1 response. Note that a natural 2NT response is unavailable as well; it is reserved for the Jacoby 2NT convention that shows a game-forcing raise.
Examples of hands that would bid 1NT Forcing in response to 1
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Balanced, 7 points. A 1NT response in any system. |
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With 11 points, this hand is too weak to respond 2 |
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This one is a matter of partnership discussion. Some players like to stick crummy raises (4-5 points) into 1NT Forcing. In this case, responder plans to rebid hearts at the cheapest level. |
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1NT Forcing can also be used to show a 3-card limit raise with 10-12 points. In this case, responder plans to jump-raise hearts next. |
A432
J987
Opener’s Rebids
Frankly, this area is a weakness of the 2/1 system. AÂ 1/Â opening bid may be made on a wide variety of hand patterns between 11-20 points. Opener may not have a descriptive rebid available.
After 1Â : 1NT
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2 |
May be as short as two clubs, e.g. 4-5-2-2 shape with insufficient strength to make a2 |
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May be as short as three diamonds, e.g. 4-5-3-1 or 3-5-3-2 shape. |
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Shows six hearts, may have a four-card side suit. |
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Shows four spades, rarely five if opener is 6-5 in hearts and spades. This is a reverse showing at least 16 points. |
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2NT |
Balanced, 18-19 points. Invites partner to bid 3NT. |
 All other bids are natural and/or a matter of conventional agreement.
After 1Â : 1NT
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