How do you reach this slam?

[pbleighton]

1D-1S-2C-4D(1430 in diamonds)-4NT(2 w/o DQ)-5D(kings not including DK)-5NT(2)-7D.

 

Sorry, no 7NT.

 

Peter

[mindofmike]

Thanks to everyone for the responses. A few thoughts:

 

1) Many mentioned an inverted minor raise to 2D on the first round; however, we play that this 100% denies a four-card major, so 1S is somewhat forced. 2C, similarly, is the only option we have; 3C would be GF, and while I'm an agressive bidder, I still don't have it (make my hearts KQx, and I'd consider it).

 

2) After thinking it over, here's the sequence that works best in our methods:

1♦-1♠

2♣-2♥(1)

2NT-3♦

3♠(2)-4NT(3)

5H(4)-5NT(5)

6C(6)-6NT(7)

 

(1) I'm not sure this technically falls under the umbrella of "fourth suit forcing," but it's played as artificial.

(2) Cuebid in support of diamonds.

(3) RKCB

(4) Two keycards w/o ♦Q.

(5) King-ask (specific kings)

(6) King of clubs.

(7) At this point, North can count 11 tricks; to make the 3S cuebid, South must have some extra values, so he trusts him to find a twelfth trick somewhere.

 

I still don't see how to reach the grand, but 6NT+1 will matchpoint significantly better than 6♦+1.

 

Thanks all,

 

Mike

[EricK]

In your sequence, what would 6♥ mean instead of 6NT. I believe that in Kantar's book on RKCB it is asking in ♥. When partner shows the K, can't you count 13 tricks in ♦ (5♦ 2♣, 2♣ ruff, 2♠, 2♥)?

[arrows]

I can't see what's the problem here. even without any fancy toys:

 

1D 4NT

5H 5NT

7D

 

After all key cards confirmed, what else more you need to bid 7D?