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Detail specifications 63EZ - Level 1 ★
Blackwood or Quantative 4NT?
Blackwood or Quantative 4NT?
If a support fit has already been established, 4NT is always Blackwood. However, if a fit hasn't yet been established, sometimes you need to stop and think!
If a support fit has already been established, 4NT is always Blackwood. However, if a fit hasn't yet been established, sometimes you need to stop and think!
- Certain bids specifically imply a fit : Splinter, a jump fit and especially a Texas rectification jump bid, so when 4NT is bid this is Blackwood..
- After a 1C0 opening bid and a fit hasn't yet been established and your P bids 4NT ... this is Blackwood. Your P is fitted and doesn't want to give the Opps bidding space to find a "sack" contract.
- In certain bidding sequences, your P doesn't have the bidding space for a forcing Slam bid, when he bids 4NT this is Blackwood and implies a support fit.
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Exercise E9761 5♦ using 30-41. P doesn't have any bidding space for a forcing support ♠ bid... This is Blackwood.
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Exercise E9764 5♠ using 30-41. P doesn't want Opps to find a ♠ contract. It's important to bid Blackwood directly when it's a lower ranked suit.
Blackwood or Quantitative 4NT?
The following 4NT bids aren't never Blackwood :
The following 4NT bids aren't never Blackwood :
- After a Stayman or a Texas bid and no established fit, 4NT is always quantitative.
- After a NT Game invitation, 4NT is always quantative.













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Exercise E6006 After a Stayman bid with an established fit, 4NT is a quantative bid.













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Exercise E6031 After a NT Game invitation, 4NT is a quantative bid.












