Stayman applies in many situations:


Standard

Partner Response
1NT 2 (Stayman)
2NT 3 (Stayman)


Overcall

Opponent Partner Response to partner
1 1NT 2 (Stayman)
1 1NT 2 (Stayman)
1 1NT 2 (Stayman)
1 1NT 2 (Stayman)


Stolen Bid Recovery

Partner Opponent Response Exception
1NT 2 Double (Stayman) (if opponents 2 shows both majors (e.g. Landy) then System is off


Delayed No Trump Opening

Partner Response Advance 2nd Response
2 2 2NT 3 (Stayman)


Double Interference

With double interference system is on

Partner Opponent Response
1NT Double 2 (Stayman)
2NT Double 3 (Stayman)


Smolen

game forcing response when 5-4 in the majors

1NT opening

Opener’s Response to Stayman (ie 1NT-2-) Smolen Advance Explanation
2 4 8 or 9 card major match found
2 4 8 or 9 card major match found
2 3 (the shorter major) shows exactly 4, 5
2 3 (the shorter major) shows exactly 4, 5

2NT opening

Opener’s Response to Stayman (ie 2NT-3-) Smolen Advance Explanation
3 4 8 or 9 card major match found
3 4 8 or 9 card major match found
3 3* (the shorter major) shows exactly 4, 5
3 3* (the shorter major) shows exactly 4, 5

*note there is no jump in the 2NT opening case, as this would preclude a final contract of 3NT. So Garbage Stayman cannot be used over 2NT, as the bids needed are lost to Smolen in preference.

Garbage Stayman

attempt to find major match when weak and 5-4 in the majors

Stayman Response Advance Explanation
2 pass 8 or 9 card major match found
2 pass 8 or 9 card major match found
2 2 (the longer major) shows 5, 4
2 2 (the longer major) shows 5, 4

note Garbage Stayman doesn’t apply over 2NT (as the bids needed are lost to Smolen)

Long (6+) Minor, 4 Card Major, Game-forcing

Example Hand
♠ QJ73
♥ 96
♦ 5
♣ AK9862

Stayman Response Rebid Meaning
2 3♣ 6♣, 4 of a major, forcing. Partner will probably bid 3NT, but may pursue ♣
2 3♣ 6♣, 4 spades. Partner may choose NT, spades (may still have 4), or clubs
2♠ 4♠ match found (6 card minor not mentioned)


Slam Interest (jump in the other major)

Example Hand (partner opens 1NT)
♠ AKJ3
♥ A3
♦ J965
♣ Q83

Stayman Response Rebid Meaning
2 3NT No match. Too weak for quantitative invite (see below).
2 3NT 4♠s. No match (yet). Too weak for quantitative invite. Slam prospecting can be re-initated with a cue-bid if partner follows up 4♠
2♠ 3 Artificial. 4♠ slam interest, start cuebidding if interested


Slam Interest (quantitative invite)

Example Hand (partner opens 1NT, slightly stronger than above)
♠ AKJ3
♥ A3
♦ Q965
♣ Q83

Stayman Response Rebid Meaning
2 4NT Invite to 6NT (not Blackwood as no suit established)
2 4NT No match (as declined to bid 3♠). Invite to 6NT (not Blackwood as no match)