A useful way to play 4-way transfers without having to bid Stayman when you don’t want to hear partner’s majors.

♠️A2 ❤️82 ♦️K9743 ♣️J976
A good old fashioned 1N-2N asking partner to bid game with a maximum would be perfect for this hand. Playing basic 4-way transfer we would bid: 1N-2C-2x-2N (alerted).
Expert standard in this case: 1NT-2♠️ = 6+ clubs or Range Ask. Opener's replies:
2NT Minimum (15-16)
3♣️ = Maximum (16-17)

♠️KQ4 ❤️KT43 ♦️AK93 ♣️76
1NT-2♠️-2NT opener's minimum
♠️AJ92 ❤️AKQ2 ♦️QJ2 ♣️93
1NT-2♠️-3♣️ opener's maximum

♠️A2 ❤️82 ♦️K9743 ♣️J976
1NT-2♠️-2NT-Pass opener's minimum
♠️A2 ❤️82 ♦️K9743 ♣️J976
1NT-2♠️-3♣️-3NT opener's maximum
♠️642 ❤️2 ♦️432 ♣️QT9763
1NT-2♠️-2NT-3♣️ sign-off with clubs
♠️K2 ❤️2 ♦️Q432 ♣️AJ9763
1NT-2♠️-3♣️-3❤️ Transferring to a minor and bidding a new suit at the 3 level shows a singleton or void.
Whenever we have a 4-card major and a longer minor, we start with Stayman. So transferring to a minor and bidding a major doesn’t need to be natural.

1NT-2NT Diamond transfer. Opener's replies:
2♣️ I don't like diamonds
2♦️ I like diamonds. Maximum OR a good fit.

♠️AKJ2 ❤️Q82 ♦️K93 ♣️K43
1NT-2NT-3♦️ I like diamonds
♠️AQJ2 ❤️Q82 ♦️K94 ♣️K43
1NT-2NT-3♦️-3❤️-3♠️ Partner showed heart shortness. The 1NT Opener should avoid bidding 3NT and proceed with the most natural bid they can.
Here we should show partner how strong our spades are. If partner has a hand with 3 spades to go with their singleton heart 4♠️ could easily be the best game.
♠️Q2 ❤️82 ♦️K43 ♣️AJ9763
1NT-3NT Wrong hand to transfer. We only transfer to clubs when we are planning to pass 3♣️ or if we want to tell partner about shortness.

Inviting with spades

We were taught to transfer to 2♠️ and bid 2NT with 5 spades and 8-9 points. Experts have found a better way to invite: Stayman followed by 2♠️.

♠️AKJ92 ❤️542 ♦️3 ♣️8763
1NT-2♣️ Stayman. Planning to invite with spades.
♠️54 ❤️AK64 ♦️A764 ♣️A52
1NT-2♣️-2❤️-2♠️-Pass Even with a 7 card fit, we are much better off playing in 2♠️ in this hand.
This is the main benefit: stop in 2♠️ when partner has a minimum.

Examples of aggressive invites with 5 spades: ♠️KJT83 ❤️4 ♦️83 ♣️K9432 or ♠️AK843 ❤️87 ♦️T9832 ♣️4
♠️96 ❤️KJ42 ♦️KQT3 ♣️AQ3
1NT-2♣️-2❤️-2♠️-Pass minimum without a fit.
♠️74 ❤️AK93 ♦️KQ93 ♣️AJ6
1NT-2♣️-2❤️-2♠️-2NT maximum without a fit.
♠️Q72 ❤️AK92 ♦️AQ92 ♣️93
1NT-2♣️-2❤️-2♠️-3♠️ fit, interest in game.

Only one way to bid garbage

This is a small price to pay for the previous agreement.
♠️Q9764 ❤️K543 ♦️Q32 ♣️6
1NT-2♣️-2♦️-2❤️ We cannot bid 2♠️ on this hand as it would show invitational values.
We would have had enough to invite game had partner shown a fit for one of our majors, but now we must back off.
2❤️ says we were just bidding garbage stayman. It could be longer in either major.

Source: 1NT Opening Structure by Gavin Wolpert

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