[bluerib]

One of the best hands I have ever bid and made is the following.

---

I was N. The other players’ name will not be revealed.
The bidding was as shown.
With S’s voluntary end-bid of 6NT, I could guess that he lacked one Ace, which should be the ♥ Ace. Then, with W’s double, I could also guess that W held all the missing honors: the ♥Ace, and possibly one or two Kings. Partner’s bid of 6NT may also mean that he had both the K and the Q of ♥. If such was the case, then I’d better play in ♣ than in Notrump. So, I bid 7♣ with W’s roar of “Double”.
As the cards lie, the line of playing is clear. Whatever the opening lead was, I could make 7♣ for 1630 points based on what has been guessed above.

[Cyberyeti]

If you make this deduction, redoubling 6N will get you a better result when partner has J10x, AQxx, KQxx, AQ, and 1360 or whatever it is and 1630 should be similar numbers of matchpoints.

[DozyDom]

This auction reminds me of a famous quote from a German artist: "I don't think I could eat as much as I want to throw up".

But hot damn, what a result! Well done, and I hope you get to tell the story as often as possible - everyone needs hands like this to liven up your life.

[FelicityR]

I have to say it as it is, but frankly 7C is an awful bid. It was lucky. Partner wants to play 6NT from his/her side of the table. You have to trust your partner, even one that bashes out 4NT after a single opening bid.

[rmnka447]

The result was great, but the hand was bid poorly.

Now tell me why South couldn't have ♥ AQ86 ♦ KQ86 instead of the cards actually held in those suits?

Bidding Grand Slam on a guess isn't right. You bid Grand only if you can count 13 tricks or if you are sure it is at worst about a 70% chance or better to make.

Guessing partner does not hold ♥ A is putting the ♦ A in partner's hand. One cardinal rule of bidding is "Never put cards into partner's hand unless bridge logic tells you they absolutely have to be there."