Kaitlyn S, on 2017-March-07, 22:13, said:
First, you don't want to be in slam with two fast club losers. Even if the opponent didn't cash them against your contract, they would have probably cashed them against 6D.
Unfortunately, I don't think inverted minors are part of SAYC - you are expected to make up a forcing bid. SAYC really doesn't work well for South's first response. Making up a 2C forcing response won't will not work out very well; but that is predictable (if partner hss clubs, the spade suit might be a problem.) I would bid where I lived; responding 1H, willing to play the 4-3 heart fit if partner insists on hearts.
North: 1D
South: 1H
North: 1S (if your partner's style is to ignore the 4-card spade suit and raise hearts on 3, you can't respond 1H, and you'd better have a forcing minor raise.)
South: 2C fourth-suit forcing and artificial
North: 2H showing 3-card support, having denied 4
South: 3D real diamonds, game forcing (otherwise would have jumped to 3D last turn even if 4SF isn't game forcing for you)
North: 3S last ditch effort to reach 3NT; can't be 5-6 when having showed three hearts
South: 5D (to play, do not want partner to pass 4D; some players think "game forcing" means they can bail in four of a minor if it appears things aren't working; if partner thinks 4D is stronger than 5D, I'll bid it so he'll bid six with a singleton club)
I would open the North hand as it has 3 QTs. Some experts might not, but that's a matter of style. (Like mycroft, I'll admit to being a K/S player and under the influence of Edgar Kaplan's thoughts on bidding.)
I'm very much in agreement with Kaitlyn's sequence here. 1
♥ seems much less a lie than manufacturing a 2
♣ (presumably natural) response.
I also agree that SAYC has problems with no forcing minor raise. But SAYC is a somewhat simplified bidding system aimed towards newer players who would have some issues learning systems with much more specific and detailed bidding sequences and tools. The important thing is to help them learn the basics principles of good bidding down pat. If they can do that, then in the long run, they'll be better off and able to graduate to a more involved bidding system.
With that in mind, I think one of the key principles the OP can take away is in Kaitlyn's comment about South's 3
♦ bid. The principle is that every time you force your partner to bid again you add value to your hand. So after opener's 1
♠ rebid, a 2
♦ responder rebid is a signoff showing 6-9 and diamonds and a 3
♦ responder rebid shows 10-12 invitational with diamonds. So by using a 2
♣ bid to force again, then showing the
♦ fit, responder is showing at least an opening bid with a diamond fit. Note that responder's hand is still unlimited. In SAYC, the 2
♣ bid in this sequence isn't a game force per se, but a one round force. So after opener's 2
♥ rebid over 2
♣ (showing 3
♥) with an invitational hand with 5 hearts, responder could have raised to 3
♥ to invite game.