[smerriman]

pigpenz, on 2022-August-06, 12:05, said:

3 aces both grands are about 80%
2 aces both small slams are about the same

maybe we are being too scientific?

But the key is finding grand when you have the right two aces, so those numbers probably aren't that meaningful.

[thepossum]

I also ran a little sim based just on Aces and Kings using Gerber. Interesting Even not needing the Ace of spades. But it helps on choosing which slam

My basic method in this case is Gerber then take a chance

I had forgotten to ask if it was MPs or IMPs

[Gilithin]

smerriman, on 2022-August-06, 19:46, said:

But the key is finding grand when you have the right two aces, so those numbers probably aren't that meaningful.

Avoiding slam completely when partner has neither red ace or is missing the ♦AK seems to me even more important.

[fromageGB]

I'm a simple soul, so for me with this hand and combined strength it is simply a question of aces.

1NT - 2NT (compulsory transfer to clubs)
3♣ (forced) - 4NT (spade void ace ask)
??reply?? - If 5♣ = 0 ace => pass, if 5♦ = 1 ace => 6♣, if 5♥ = 2 aces => 6♣.
Grand would need an ideal but for us undeterminable hand.

On the other hand, we do have a side KQ ask when we are playing in a major, so it is a simply a partnership decision to play it with a minor.

1NT - 2NT
3♣ - 3♦ (side KQ ask)
3♥ = K♦ or Q♦ (or both) - 3♠ = what about hearts?
3NT = K♥ or Q♥ (or both) [so opener has K♦+Q♥] - 4NT (spade void ace ask)
??reply?? - If 5♣ = 0 ace => pass, if 5♦ = 1 ace => 6♣, if 5♥ = 2 aces => 7♣.

This way grand is a laydown if partner has ALL the right cards (apart from a ruff of the opening lead).
If the Q♥ was missing but he had the others, I would think about still bidding 7 as there is a better than 50% chance of partner having another trick.

[Cyberyeti]

We start with 3♣ natural, forcing and single suited, partner almost inevitably bids 3♦ and now we go to 4♠ voidwood.