Gerber Convention

Points for Slam.

6 NT – 32-34 HCP

7 NT 35 + HCP (with all the Aces and Kings)

Looking for Slam

A 4 Club jump bid after a NT opening or a NT Rebid is asking for Aces.

Responses:

4 D – 0 or 4 Aces

4H – 1 Ace

4S – 2 Aces

4 NT – 3 Aces

5 Club bid asking for Kings.  Usually only used if looking for 7 NT.

Must have all the Aces to ask for Kings.

5 D – 0 or 4 Kings

5 H – 1 King

4 S – 2 Kings

5 NT – 3 Kings

With 33 - 34 HCP and no 4 or 5 Card Major, Bid 4 Clubs asking for Aces.

4NT shows 3 Aces.

Bid 6 NT.

With 5 Spades Bid 2 Spades.  (This assumes you do not use "Transfers Bids" with NT.) When Opener denies 3 Spades looks for Slam in NT by Bidding 4 Clubs asking for aces. (15 - 17 HCP plus 18 HCP)

With all the Aces Bid 6 NT. 

You are missing one Ace.  If Opener has 15 - 17 HCP and only 1 Ace, he must have the Kings.  You need all the Aces to ask for Kings so just bit 6 NT expecting to lose only the Ace.

With at least 32 HCP and one Ace missing take the change and go with 6 NT.  You each have a 5 card suit and South has stoppers in the other suits.

Once you find you have all the Aces with 34+ HCP check for the Kings.  When North shows the missing King bid 7 NT.  Your Queens are now good.