Freak hand, probing bid needed

[keylime]

I had this hand and it was rather interesting on 2 parts.

 

Let's say you are dealt this fine assortment:

 

AKQxxxx

x

void

Axxxx

 

Pard opens a diamond, rebids 2D, and then afterwards 3NT.

 

What now?

[Guest Jlall]

That is a very unfavorable auction for my hand, I'd just bid 4S.

[jdonn]

I was close to maybe 5♠ but I'll just go with 4 as well. It's possible to have slam but every bid has made my hand worse than the last, and even 5 can be too high especially if partner has xxx of clubs.

[kenrexford]

I'm not sure what I have bid so far, unless the opponents have let my partner make two bids out of turn. I'll guess that the auction might have been as follows:

 

1♦(natural)-P-1♠(natural)-P-

2♦(natural)-P-3♣(5-5+, GF)-P-

3NT

 

If and when I bid 4♠, partner will know that I have a self-playing spade suit, playable opposite a void (a likely situation), with a five-card club suit that I wanted to show despite having a self-playing spade suit. That's a big bid. Why I would do anything other than 4♠ and trust partner evades me.

 

If he has something like ♠J ♥A10xx ♦AKxxxx ♣Kx, he better not get stupid on me.

[keylime]

My thoughts were these:

 

1. Since I have a good hand, and pard has advertised some tolerance in spades with a heart stop, I might be worth one more shot at slam via 4♣.

2. I want to know if by chance, pard owns the A♥ along with good diamonds for a grand slam try.

 

At the table, the next bid that came was 4♥ from this freak hand. What is 4♥ here in an undiscussed auction?

 

Auction to date:

 

1♦ - 1♠

2♦ - 3♣

3NT - 4♥

[kenrexford]

At the point of the 4♥ call, 4♣ and 4♦ would be natural, it seems, and GF. 4♠ would also be natural but NF. Thus, 4♥ would seem to be a Last Train generic cue for one's one suit -- spades. A tad esoteric, perhaps, but the only conclusion I can reach. Had Opener made some type of similar call in some similar action, this would be easily read as LTTC, so I see no reason for Responder to not do the same thing.

[pclayton]

Dwayne, I assume a SJS isn't available over 1♦?

 

This is a tough auction to judge, but we have no fit and no security at the 5 level. I keep looking, but we have a lot of club losers we need to dispose of with serious entry problems.