Now what - just played on BBO. As south - I feel partner has showed his hand well.
Edit: 4NT is 03/14 RCKB
4SF is accepted, and slam invit is also accepted, the way I see it. He must accept my diamonds, given him not bidding 3♥. Right? He might very well have a solid 6 card heart-suit or at least KQJxx of hearts. And the ace of clubs, he would not ask with no keycards himself. Should I be afraid of him passing my 5♦ respond playing 03/14? Guess this is a good example of why 14/30 is better...
For you who played, and bid the hand correctly, you'll know North has ♠K ♥KQJxxxx ♦Jx ♣AKx.
My respons - the fatal 7♦ which was DBL, and the magic lead of a heart to RHO's void. Trumphs was 4-1 - the ugly way - down 2.
Should I correct after the double? Should I flee to 7♥/NT?
Is 14/30 a perfect example of superiority here?
Any thougths on 1♦-2♥ as GF slam invit as an alternative auction?

Help

1♦-1♥
1♠-2♣*
2♦-2♥
3♦-4NT