What Is the Smolen Convention in Bridge?

Smolen is a bidding convention used after the auction 1NT - 2♣ - 2♦, when Stayman has denied a four-card major. Responder jumps to three of a major to show game-forcing values, four cards in the major bid and five cards in the other one. Bidding the shorter major lets the strong 1NT opener declare the major-suit game.

By Tracey Bauer

New to bridge? Start with the complete beginner's guide, then come back for Smolen.

Smolen picks up exactly where Stayman leaves off. You asked the question, partner said no, and most partnerships shrug and sign off in 3NT. Smolen keeps looking, because a major-suit fit may still be sitting right there. Here is how it works, taught the way tournament players play it today.

What problem does Smolen solve?

Picture the moment. Partner opens 1NT, you hold five spades and four hearts with game-going values, and you start with Stayman: 1NT - 2♣. Partner answers 2♦, no four-card major.

Your four-card major just struck out. Your five-card major has not. A balanced opening hand holds at least two cards in every suit and very often three in yours, so a 5-3 spade fit may still be sitting there. That fit is usually worth finding, because a trump suit gives you something notrump never has: the shorter trump hand can ruff, and a ruff is a trick that no amount of high cards would have produced.

Without a convention you have a clumsy choice. Bid 3♠ naturally and, if partner raises, the strong hand goes face up on the table as dummy. Or give up on the fit and bid 3NT, which may be the wrong game entirely. Smolen solves both problems with one bid, and it costs you nothing you were already using.

How does the Smolen convention work?

Smolen applies in exactly one auction: 1NT - 2♣ - 2♦. After opener denies a four-card major, responder holding game-forcing values and 5-4 in the majors jumps to three of a major. The trick is that the jump is upside down:

• 3♥ shows five spades and four hearts.
• 3♠ shows five hearts and four spades.

You bid your four-card major and promise five cards in the other one. The memory hook is short enough to survive a long session: bid four, promise five.

Opener then places the contract:

• With three-card support for responder's five-card major, opener bids game in it. After 3♥ (five spades), opener bids 4♠. After 3♠ (five hearts), opener bids 4♥.
• With only a doubleton in that major, opener bids 3NT and responder passes. The 4-4 fit was already ruled out by the 2♦ reply, so notrump is the right game.

Two bids, and the partnership lands in the right game.

Why does Smolen bid the shorter major first?

This is the heart of the convention, and it is worth understanding rather than memorizing. The goal is right-siding the contract: making sure the strong balanced hand is the declarer instead of the dummy.

When responder bids 3♥ holding five spades, opener is the one who bids 4♠, so opener declares. The 15 to 17 point hand stays hidden, the opening lead comes up to its tenaces instead of through them, and holdings like K-10-4 or A-J-7-2 are worth close to full value. If responder had simply bid spades naturally and been raised, that same strong hand would be face up on the table while the defenders planned around it.

It is the same logic that powers Jacoby Transfers, applied to the one shape transfers do not handle well once Stayman has already started the conversation.

What does a Smolen auction look like?

Here is a full deal, the same one from Day 35 of the 50 Conventions in 50 Days series.

Opener holds:

♠ Q 6 5   ♥ A K 7   ♦ K 10 4   ♣ A J 7 2   (17 HCP)

Responder holds:

♠ A K J 7 4   ♥ Q 9 6 2   ♦ 7 3   ♣ 8 4   (10 HCP)

The auction runs 1NT - 2♣ - 2♦ - 3♥ - 4♠:

• 1NT by opener: 15 to 17 balanced.
• 2♣ by responder: Stayman, asking for a four-card major.
• 2♦ by opener: no four-card major.
• 3♥ by responder: Smolen. Five spades, four hearts, game-forcing values.
• 4♠ by opener: holding three spades, opener knows about the 5-3 fit and bids the game.

Count the fit: responder's five spades plus opener's three make eight trumps, and the partnership reaches 4♠ played by the strong hand, with the ♦K and the ♣A J sitting behind the opening lead rather than in front of it. A pair without Smolen signs off in 3NT instead, and 3NT is not a disaster here. The spade game is simply worth more tricks: after three rounds of hearts opener is void, dummy still has one heart left, and opener's short trump holding ruffs it. That is a tenth trick built out of nothing but the fit, and no notrump contract can manufacture it.

When does Smolen apply, and when do transfers apply instead?

Smolen is a narrow tool, which is exactly why it is easy to play. Sort your major-suit hands over 1NT this way:

• Five-card major only, or 5-5 in the majors: transfer. No Stayman needed.
• One or two four-card majors and no five-card major: Stayman, then follow up naturally.
• 5-4 in the majors with game-forcing values: Stayman first, and if opener bids 2♦, Smolen.
• 5-4 in the majors with a weak hand: transfer to the five-card major and pass. You cannot afford the three level.
• 5-4 in the majors with invitational values: partnerships handle this differently, but the standard route is to transfer and then bid the four-card major, since Smolen's jump forces to game.

Notice what Smolen requires: game-forcing values, exactly 5-4 in the majors, and the specific sequence 1NT - 2♣ - 2♦. If opener answers 2♥ or 2♠ instead, you found your fit and Smolen never enters the picture. Many partnerships also carry the same principle up a level after a 2NT opening, using the identical jumps one level higher, but that is an agreement to confirm with your partner rather than assume.

What are the most common Smolen mistakes?

• Bidding the five-card major instead of the four-card major. This is the classic error, and it wrong-sides the contract. The jump shows the suit you bid and promises five of the other one. Bid four, promise five.
• Using Smolen without game-forcing values. The jump to the three level commits the partnership to game. With a weak or merely invitational hand, take a transfer route instead.
• Opener passing 3♥ or 3♠. The Smolen bid is forcing. Opener chooses between game in responder's five-card major and 3NT, and never passes.
• Trying Smolen after 2♥ or 2♠. The convention exists only after the 2♦ denial. If opener shows a major, raise it or bid on naturally.
• Forgetting the agreement mid-auction. Smolen is a partnership agreement, not a general truth of bridge. Confirm it with your partner and mark it on your convention card before it comes up at the table.

Keep building your convention toolkit

Smolen is the kind of convention that pays for itself the first time it comes up, and it comes up more often than you would think. If you want to learn it alongside the rest of a modern bidding system, taught with real hands and real auctions:

• The 50 Conventions in 50 Days series covers Smolen on Day 35, with deeper hand examples, follow-up auctions and partnership agreements.
• Live workshops walk through conventions like this one card by card. The schedule is at bridgeunleashed.com/workshops.
• If a term in this guide is new to you, the bridge glossary defines it in plain language.
• VIP membership includes every workshop in the series, replays included, so nothing you miss stays missed.

Questions players ask about Smolen

What does the Smolen convention show?
After 1NT - 2♣ - 2♦, a jump to 3♥ shows five spades and four hearts with game-forcing values, and a jump to 3♠ shows five hearts and four spades. Responder always bids the four-card major and promises five cards in the other one.

Why do you bid the shorter major in Smolen?
So opener declares. When opener picks responder's five-card major, the strong 1NT hand plays the contract, stays hidden from the defenders, and receives the opening lead into its high-card holdings instead of through them.

Is Smolen forcing to game?
Yes. The jump to three of a major promises game-forcing values. Opener bids game in responder's five-card major with three-card support, or 3NT with a doubleton, and never passes.

When do you use Smolen instead of a Jacoby Transfer?
Use a transfer with a five-card major and a weak or one-suited hand. Use Stayman followed by Smolen when you hold exactly 5-4 in the majors with game-forcing values, because that route checks for the 4-4 fit first and still finds the 5-3 fit afterward.

Does Smolen apply after opener bids 2♥ or 2♠?
No. Smolen exists only after the 2♦ reply denies a four-card major. If opener answers 2♥ or 2♠, a major-suit fit has been found or can be reached naturally, so the convention is not needed.