1H --- 2N
3H --- 3N
4D --- 4N
5D --- 5N (specific Kings)
The 2N agreed hearts, 3H showed a minor shortage, 3N asked, 4D was the shortage. Then RKC and Kings.
If you play 'normal' Jacoby. Then the bidding goes:
1H --- 2N (agreeing hearts)
4C --- 4N (5 card club suit)
5D --- 5N (0 or 3, 0 is unthinkable, partner only has 3 cards in the other suits)
There are 12 certain tricks, can we make a 13th. Well it is 50-50 partner has doubleton spade in which case 13 is certain as a spade is discarded on the clubs and a spade ruff is available. If partner has the doubleton diamond a squeeze might be on (swap the N and S hands, also change West's 3S to 3D and you'll see you must make 13 tricks after running all your hearts and clubs). So a little odds on to make 13, but only bid it if you need the points!
Adrianne, like everyone else went one down losing four heart tricks. She thought she should have just opened 2H and that would have been better, though very unlucky with the trump break. What would I bid over 2H, presumably 2N and when Adrianne bids 3H showing good points, I suppose I would try 3N which makes due to a lucky lie in the diamonds.
Deep Finesse says you can only make 9 tricks in hearts. How about: QS lead won by K, QC to AC, KC throw a spade, ruff a club, finesse QD, ruff a club, AS, ruff a spade, AD. You have 9 tricks, You have Qxxx in hand, West has AKJ10 duck a heart to West and you make QH for 10 tricks. What do you mean you're not going to finesse QD and lose 500 points, how do you know there are 4 clubs and not 3 diamonds in West's hand? That's why they call it Double Dummy.