Conventions: Baby Blackwood

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Baby Blackwood is a 3NT ace-asking bid after a major-suit fit is found.

Baby Blackwood
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Source: BridgeBum

Baby Blackwood is a 3NT ace-asking bid after a major-suit fit is found. It is just like Blackwood, except that it’s one level lower. Example auctions:

Opener   Responder
1 3
3NT  
Opener   Responder
1 2
3 3NT

In these auctions, it’s extremely unlikely that 3NT is needed as a natural bid. Hence the idea to save one level of bidding space.

Some partnerships also play 1/ : 3NT as Baby Blackwood, although I prefer to play 3NT as 13-15 HCP with 4333 shape. Rather than use Baby Blackwood in this situation, I find a Jacoby 2NT response more practical.

 Responses to 3NT

The responses to 3NT are the same as Blackwood.

4 Shows 0 or 4 aces
4 Shows 1 ace
4 Shows 2 aces
4 Shows 3 aces

Alternatively, Key Card responses can be used.

Rebids by the 3NT bidder

After hearing partner’s response, a 4NT rebid is a king-asking bid. The responses follow the same pattern as the 3NT responses where 5 shows 0 or 4 kings, etc.

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