When responder finds a major suit fit using Stayman, it is standard for responder to show slam interest by bidding 3 of the other major. Advanced partnerships and expert partnerships may want to play the Reverse Baze convention to improve their slam bidding after Stayman. With that agreement, responder's bid shows a fit for opener's major, slam interest, and shortness in an unspecified side suit. If responder has a fit, slam interest, but no singleton or void, responder bids an artificial 4♣ as a fit showing slam try without shortness. A jump to 4♦ is Roman Keycard Blackwood for opener's major.
Here is a summary of fit showing slam tries after Stayman finds a heart fit.
| South | West | North | East |
| 1NT | Pass | 2♣ | Pass |
| 2♥ | Pass | ? |
3♠ = an artificial slam try (Reverse Baze) showing a heart fit, slam interest, and an unspecified singleton or void
4♣ = an artificial slam try showing a heart fit and no singleton or void in a side suit
4♦ = Roman Keycard Blackwood for hearts
Note that a jump to 4NT would be a quantitative invitation to 6NT with 4 spades and no heart fit
Responder's continuations to show a spade fit and slam interest are similar.
| South | West | North | East |
| 1NT | Pass | 2♣ | Pass |
| 2♠ | Pass | ? |
3♥ = an artificial slam try (Reverse Baze) showing a spade fit, slam interest, and an unspecified singleton or void
4♣ = an artificial slam try showing a spade fit and no singleton or void in a side suit
4♦ = Roman Keycard Blackwood for spades
Note that a jump to 4NT would be a quantitative invitation to 6NT with 4 spades and no heart fit
Opener's Continuations after Responder's Reverse Baze Bid
After responder shows a fit, slam interest, and a singleton or void in a side suit, opener bids the next step to ask responder to specify short suit.
| South | West | North | East |
| 1NT | Pass | 2♣ | Pass |
| 2♥ | Pass | 3♠* | Pass |
| 3NT* | Pass | ? |
On the above auction, 3♠ is an artificial slam try (Reverse Baze) showing a heart fit, slam interest, and an unspecified singleton or void. Opener's 3NT bid is artificial, asking responder to use step responses to show their short side suit. The steps are clubs, diamonds, other major.
4♣ = singleton or void in clubs
4♦ = singleton or void in diamonds
4♥ = singleton or void in spades
If a heart fit is found, the same step responses are used, but they don't line up with the actual suit.
| South | West | North | East |
| 1NT | Pass | 2♣ | Pass |
| 2♠ | Pass | 3♥* | Pass |
| 3♠* | Pass | ? |
On the above auction, 3♥ is an artificial slam try (Reverse Baze) showing a spade fit, slam interest, and an unspecified singleton or void. Opener's 3♠ bid is artificial, asking responder to use step responses to show their short side suit. The steps are clubs, diamonds, other major.
3NT = singleton or void in clubs
4♣ = singleton or void in diamonds
4♦ = singleton or void in hearts
Opener's Continuations after Responder's Jump to 4♣ after a Finding a Fit using Stayman
After responder jumps to 4♣ to show a fit, and slam interest without a side suit singleton or void, opener bids 4 of the agreed major if they have a minimum hand which doesn't justify cooperating with responder's slam try. To cooperate with the slam try, opener makes the cheapest available control bid.
| South | West | North | East |
| 1NT | Pass | 2♣ | Pass |
| 2♠ | Pass | 4♣* | Pass |
| ? |
On the above auction, 4♣ is an artificial slam try showing a spade fit, and slam interest with no singleton or void in a side suit. The 1NT opener rebids as follows:
4♦ = 1st or 2nd round control of diamonds, cooperating with the slam try
4♥ = 1st or 2nd round control of hearts, cooperating with slam try, denies 1st or 2nd round control of diamonds
4♠ = not willing to cooperate with the slam try
The approach is similar after a heart fit is found and responder uses the artificial 4♣ rebid to make a slam try. Because there is only one bid available between 4♣ and 4♥, advanced partnerships may wish to use a 4♦ rebid by opener as showing a willingness to cooperate with the slam try, but not guaranteeing a diamond control. This allows opener to show interest without bypassing 4♥.
| South | West | North | East |
| 1NT | Pass | 2♣ | Pass |
| 2♥ | Pass | 4♣* | Pass |
| ? |
4♦ = artificial, willing to cooperate with the slam try, does not show or deny a diamond control
4♥ = not cooperating with the slam try
4♠ = cooperating with the slam try, 1st or 2nd round control of spades, no diamond control
