Modern Notrump rebid ranges after One over One response

Historically (after you open, say 1 ♦ and partner responds, say 1 ♠):

However, the 3 NT rebid is very clumsy: you have no room to investigate alternative games. Far better for 1 ♦ -1 ♠-3 NT to show a gambling hand based on a trick source eg;

(for what else would you rebid with these hands — a non-forcing 3♦ ?). Further, in the modern era of responding light given any excuse, do you really want to jump to 2 NT holding a 17-count and get overboard with 17 facing 5/6 points?

3 NT would have lost four diamond tricks and the ace of hearts — the defence would have time to switch to diamonds, even if they didn’t lead a diamond initially.

In 4 ♥ , declarer won West’s ♠ 10 lead with ♠ Q and correctly crossed to ♣ Q, to lead ♥ 2 towards ♥ Q (key play). In this way, West was restricted to just one trick. He elected to play♥ J but declarer won dummy’s ♥ Q and led back to ♥ 10 and ♥ A. The defence cashed two diamonds but declarer ruffed the third, cashed ♥ K drawing ♥ 9 and claimed ten tricks and game made.

Note that if declarer led ♥ Q from dummy to West’s ♥ A, he’d likely lead to ♥ 10 next and lose to ♥ J.