Advanced Bidding Techniques: Take Your Game to the Next Level
By Bridgetastic
You know Standard American or 2/1. You understand Stayman and transfers. You can bid to game without embarrassing yourself.
But you’re leaving points on the table. You miss slams that should be bid. You reach slams that have no play. You can’t communicate shortage, controls, or exact suit lengths.
Advanced bidding techniques solve these problems. They’re not showy—they’re practical tools that let you and partner exchange precise information when it matters most.
This guide covers the five advanced techniques that separate club players from serious competitors.
Why You Need Advanced Techniques
Basic bidding gets you to game. It answers “do we have 25 points?” and “do we have an 8-card fit?”
Advanced bidding answers harder questions:
- Do we have enough controls for slam?
- Is this a good 15 points or a bad 15 points?
- Where are my points? (Aces? Kings? Queens?)
- Do we have a double fit?
- Are my honors working (in partner’s suits) or wasted (in opponent’s suits)?
These questions decide whether you belong in 4♠ or 6♠, whether you should compete to 5♥ or defend 5♠, whether this hand is worth a game try or a signoff.
Let’s break down how to answer them.
Technique #1: Splinter Bids (Showing Shortage in Support)
What It Is
A splinter bid is a jump bid that shows:
- Support for partner’s suit (4+ cards)
- Slam interest (13+ points)
- Shortage (singleton or void) in the bid suit
How It Works
Auction:
Partner: 1♠
You: 4♣ (splinter—showing spade support, club shortage, slam interest)Your hand might be:
♠KQ76 ♥AJ84 ♦K1053 ♣2
You have 14 HCP and 4-card spade support. The singleton club is huge—it means no wasted values in clubs. If partner has ♣AKQ, those are wasted points. But if partner has aces in the other suits, slam is cold.
Why It’s Powerful
Without splinters:
Partner: 1♠
You: 4♠ (just jumping to game)Partner doesn’t know you have club shortage. Maybe you have ♣KQ10 (wasted if partner has ♣AJ). Partner can’t make an intelligent slam decision.
With splinters:
Partner: 1♠
You: 4♣ (splinter)
Partner: 4NT (Blackwood—your shortage is perfect, partner has no club honors)
You: 5♥ (2 aces)
Partner: 6♠Now partner knows you have spade support, slam values, and short clubs. If partner’s hand is:
♠AJ1085 ♥K3 ♦AQ4 ♣965
…slam is excellent. No wasted club honors. All your points are working.
But if partner’s hand is:
♠AJ1085 ♥K3 ♦764 ♣AKQ
…slam is terrible. Three club honors doing nothing. Partner can sign off at 4♠.
When to Use Splinters
Requirements:
- 4-card support for partner’s major
- 13-16 points (with more, you’d cue bid instead)
- Singleton or void in the bid suit
- No wasted honors in the short suit (don’t splinter with ♣KJ singleton—that’s a good holding)
Common splinter auctions:
1♠ - 4♣/4♦/4♥ (splinter in support of spades)
1♥ - 3♠/4♣/4♦ (splinter in support of hearts)
1♣ - 4♦ (splinter in support of clubs, rare)Example: When Splinters Make the Difference
Your hand: ♠KQ87 ♥4 ♦AJ93 ♦Q1054
Partner’s hand: ♠AJ1096 ♥AK83 ♦K7 ♣K2
Auction:
Partner: 1♠
You: 4♥ (splinter showing heart shortage, spade support, slam interest)
Partner: 4NT (Blackwood—your shortage is perfect, partner's hearts are AK)
You: 5♥ (2 aces)
Partner: 6♠6♠ makes easily. Partner can ruff hearts in dummy, draw trumps, and claim.
Without the splinter, you’d just bid 4♠. Partner would pass. You’d miss a cold slam.
Technique #2: Control-Showing Cue Bids
What It Is
After you’ve agreed on a trump suit, bidding a new suit shows a control (ace, king, or singleton) in that suit.
It’s not asking for aces like Blackwood. It’s showing controls cooperatively.
How It Works
Auction:
You: 1♠
Partner: 3♠ (limit raise, 10-12 points, 4 spades)
You: 4♣ (control-showing cue bid—showing ♣A or ♣K)
Partner: 4♦ (showing ♦A or ♦K)
You: 4♥ (showing ♥A or ♥K)
Partner: 4NT (Blackwood)
You: 5♥ (2 aces)
Partner: 6♠You’re not bidding clubs, diamonds, or hearts because you want to play there. You’re showing controls so partner can evaluate slam.
Why It’s Better Than Blackwood Immediately
Problem with immediate Blackwood:
If you just bid 4NT after partner raises spades, you learn how many aces partner has. But you don’t know which aces.
If partner shows 1 ace, is it:
- ♥A (great, you have ♦A and ♣A)?
- ♦A (so-so, you have ♥A and ♣A)?
- ♣A (disaster, you’re missing two cashing heart tricks)?
Blackwood doesn’t tell you.
Control-showing cue bids solve this:
You: 4♣ (showing club control)
Partner: 4♥ (showing heart control)Now you know partner has heart control but didn’t cue-bid diamonds. Missing diamond control. You can stop at 4♠ instead of bidding a slam off two cashing diamonds.
Rules for Cue Bidding
- Trump suit must be agreed (you can’t cue-bid without knowing your fit)
- Cue-bid up the line (show cheapest control first)
- Skipping a suit denies control (if you bid 4♥ without bidding 4♦ first, you’re denying diamond control)
- First-round controls first (aces and voids before kings and singletons)
Example: Avoiding a Bad Slam
Your hand: ♠AQJ76 ♥AK4 ♦K83 ♣A5
Partner’s hand: ♠K1054 ♥Q83 ♦A94 ♣K76
Auction:
You: 1♠
Partner: 3♠ (limit raise)
You: 4♣ (cue bid showing ♣A)
Partner: 4♠ (signoff—no controls to show, minimum hand)
You: PassPartner didn’t cue-bid hearts or diamonds. They have a minimum 10 points with no aces outside spades. Slam is wrong. You stop at 4♠.
Without cue bidding, you might blast Blackwood, hear “1 ace,” and guess wrong.
Technique #3: Fourth Suit Forcing
What It Is
When responder bids the fourth suit (the only suit not yet mentioned), it’s artificial and forcing. It doesn’t promise length in that suit—it asks opener to describe their hand further.
How It Works
Auction:
Partner: 1♦
You: 1♠
Partner: 2♣
You: 2♥ (fourth suit forcing—artificial, asks partner to describe)You don’t necessarily have hearts. You’re saying “partner, we’ve bid three suits. Describe your hand more. Do you have 3 spades? Do you have a heart stopper? Do you have extra length in your first suit?”
Why You Need It
Without fourth-suit forcing, you have no way to ask partner clarifying questions. You’d have to guess whether to bid 2NT (do they have hearts stopped?) or 3♠ (do they have 3 spades?).
With fourth-suit forcing:
Partner must bid again and describe:
- 2♠ = 3-card spade support
- 2NT = heart stopper
- 3♦ = 6+ diamonds (rebid shows extra length)
- 3♣ = 4 clubs and 5 diamonds
Now you have information to place the contract.
When to Use It
Requirements:
- All four suits have been bid
- You need more information from partner
- You have game-forcing values (or invitational in some systems)
Common scenario:
You hold: ♠KQ1074 ♥A6 ♦93 ♣AJ85
Auction:
Partner: 1♦
You: 1♠
Partner: 2♣
You: ???You have game-forcing values. But what’s the right game?
- 3NT if partner has ♥K
- 4♠ if partner has 3 spades
- 5♣ if partner has 6 diamonds and 4 clubs
You bid 2♥ (fourth suit forcing). Partner will clarify.
Fourth Suit Forcing in Action
Your hand: ♠KJ1074 ♥K6 ♦93 ♣AQ85
Partner’s hand: ♠A62 ♥A83 ♦AKJ74 ♣102
Auction:
Partner: 1♦
You: 1♠
Partner: 2♣ (showing clubs, could be 3-card)
You: 2♥ (fourth suit forcing)
Partner: 2♠ (showing 3-card spade support)
You: 4♠ (we have the fit, bid game)Partner shows 3 spades. You have 5. That’s an 8-card fit. Game in spades is right.
Without fourth suit forcing, you might guess 3NT and go down when hearts split badly. Or bid 3♠ invitational when you belong in game.
Technique #4: New Minor Forcing (After 1NT Rebid)
What It Is
After opener rebids 1NT, responder bidding a new minor (usually 2♣) is artificial and forcing, asking opener to clarify their hand.
How It Works
Auction:
Partner: 1♦
You: 1♥
Partner: 1NT (12-14 points, balanced)
You: 2♣ (new minor forcing—asking for 3-card heart support or 4 spades)You’re not showing clubs. You’re asking partner:
- Do you have 3 hearts?
- Do you have 4 spades?
- What’s your exact shape?
Why It’s Useful
Problem without NMF:
Partner opens 1♦, you bid 1♥, partner rebids 1NT.
You hold: ♠K1074 ♥AJ983 ♦6 ♣K105
You have 5 hearts and 4 spades. Is there a major suit fit?
If you just bid 2♥, you’re showing 6 hearts (you’d need 6 to rebid your suit). If you bid 2♠, you’re showing 5 spades and 4 hearts (reverse).
Neither is accurate. You’re stuck.
With NMF:
You: 2♣ (new minor forcing)
Partner: 2♥ (showing 3-card heart support)
You: 4♥ (we have the 8-card fit, game)Or:
You: 2♣ (new minor forcing)
Partner: 2♠ (showing 4 spades, denying 3 hearts)
You: 4♠ (we have the spade fit)Or:
You: 2♣ (new minor forcing)
Partner: 2♦ (no major support, showing diamond length)
You: 2NT (no fit, suggesting notrump)
Partner: 3NTNew Minor Forcing Structure
Opener’s responses after 2♣ NMF:
- 2♦ = No 3-card support for responder’s major, no 4-card spade suit
- 2♥ = 3-card support for responder’s hearts
- 2♠ = 4 spades, denying 3-card support for responder’s major
- 2NT = Maximum (14 HCP), no fit
- 3♣ = Natural clubs (rare)
Example: Finding the Right Game
Your hand: ♠AQ84 ♥KJ1074 ♦6 ♣Q105
Partner’s hand: ♠K1062 ♥A6 ♦AJ83 ♣K94
Auction:
Partner: 1♦
You: 1♥
Partner: 1NT
You: 2♣ (new minor forcing)
Partner: 2♠ (showing 4 spades)
You: 4♠ (8-card spade fit, game)4♠ makes. 3NT would fail (weak diamonds).
Without NMF, you’d guess 3NT and go down.
Technique #5: Roman Key Card Blackwood (RKCB)
What It Is
Regular Blackwood asks for aces (0-4). Roman Key Card Blackwood treats the king of trumps as a fifth “ace” and asks for key cards (0-5).
How It Works
Auction:
You: 1♠
Partner: 3♠ (strong raise)
You: 4NT (RKCB asking for key cards)
Partner: 5♦ (showing 1 or 4 key cards)The five key cards are:
- ♠A, ♥A, ♦A, ♣A, and ♠K (the king of spades, the agreed trump suit)
RKCB Responses (1430 Version)
After 4NT RKCB, responder shows key cards:
- 5♣ = 1 or 4 key cards
- 5♦ = 0 or 3 key cards
- 5♥ = 2 key cards, no trump queen
- 5♠ = 2 key cards, with trump queen
(The “1430” name comes from the responses: 1-4, 3-0.)
Why RKCB Beats Regular Blackwood
With regular Blackwood:
You hold: ♠AQJ1074 ♥AK4 ♦K83 ♣5
Partner raises spades. You bid 4NT (Blackwood). Partner shows 2 aces.
Do you bid 6♠?
You don’t know if partner has ♠K. If they do, 6♠ is cold. If they don’t, you might lose two trump tricks.
With RKCB:
Partner shows 2 key cards with the queen (5♠ response). Now you know they have ♠K. Slam is laydown.
Queen Ask and King Ask
After RKCB, you can ask for the trump queen or side kings:
Queen ask: If the response to 4NT was 5♣ or 5♦ (not showing the queen), bidding the next step asks “do you have the trump queen?”
King ask: Bidding 5NT asks for side kings (after you’ve confirmed all key cards).
Example: Using RKCB to Reach Grand Slam
Your hand: ♠AKQJ104 ♥AK ♦AQ4 ♣85
Partner’s hand: ♠9876 ♥83 ♦K105 ♣AK76
Auction:
You: 1♠
Partner: 4♠ (weak raise, but lots of trumps)
You: 4NT (RKCB)
Partner: 5♥ (2 key cards, no queen)
You: 5NT (king ask—we have all 5 key cards, asking for kings)
Partner: 6♦ (showing ♦K)
You: 7♠ (grand slam—13 tricks on top)You can count 13 tricks:
- 6 spade tricks
- ♥AK (2 tricks)
- ♦AKQ (3 tricks)
- ♣AK (2 tricks)
Grand slam is cold. Without RKCB and king ask, you’d never get there.
How to Add These to Your Game
Don’t learn all five at once. Add them one at a time:
- Start with splinter bids. Easy to understand, immediate payoff.
- Add RKCB. Upgrade from Blackwood. Same timing, better information.
- Learn fourth suit forcing. Solves the “I don’t know what to bid” problem.
- Add new minor forcing. Similar to fourth suit, different timing.
- Finally, control-showing cue bids. Hardest to master, but the most powerful.
Practice with your regular partner. These conventions require trust. You both need to be on the same page.
Use a convention card. Write down your agreements. Check it mid-auction if you forget.
Expect mistakes. You’ll forget whether 2♣ is NMF or natural. You’ll splinter when you meant to cue bid. Everyone does. Learn from it and move on.
What Advanced Techniques Don’t Do
They don’t replace basic bidding judgment. If you can’t evaluate your hand (is this a good 15 or a bad 15?), advanced techniques won’t save you.
They don’t work with random partners. These tools require partnership agreements. Play them with your regular partner, not strangers online.
They don’t guarantee results. You can use RKCB perfectly and still go down in slam because trumps split 5-0. That’s bridge. Make the percentage bid and move on.
What’s Next?
Advanced bidding is a journey, not a destination. These five techniques will handle 90% of situations. When you’re comfortable with them, explore:
- Lebensohl (after interference over 1NT)
- Drury (passed hand raises)
- Control-showing doubles (in competitive auctions)
- Exclusion Blackwood (when you have a void)
But those can wait. Master these five first.
To practice:
- Work through common bidding mistakes to understand when advanced tools matter
- Review bidding systems to see how these techniques fit the overall structure
- Check out the Blackwood Convention encyclopedia entry for deeper understanding
- Practice hands with Brian to get instant feedback on your bids
Advanced bidding separates experts from intermediates. But the real skill isn’t knowing the conventions—it’s knowing when to use them and when to keep it simple.
That only comes from practice.
FAQ
When should I use a splinter instead of just bidding game?
When you have 4-card support, slam interest (13-16 points), and a singleton or void. If you just have 3-card support or no shortage, skip the splinter.
What’s the difference between cue bidding and Blackwood?
Cue bidding shows controls cooperatively. Blackwood asks for aces directly. Use cue bids when you need to know which controls partner has, not just how many.
Do I have to play RKCB or can I stick with regular Blackwood?
You can stick with Blackwood, but RKCB is strictly better. Same timing, more information. Upgrade when you’re comfortable.
Is fourth suit forcing, forcing to game?
In most systems, yes. Some pairs play it as only forcing one round. Discuss with your partner.
Can I use these conventions with strangers online?
Splinter bids and RKCB, maybe (they’re common). Fourth suit forcing and NMF require explicit agreements. Check the partnership agreement form or assume standard.
What if I forget whether we’re playing a convention mid-auction?
Call the director (at a club). Online, make your best guess and discuss after the hand. Never ask your partner mid-auction—that’s illegal.