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1NT Opening Bids
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I like this treatment will all ranges of 1NT opening bids including Precision auctions where Opener’s defining bid is 1NT. Opener may open 1NT with 3=5-3-2 or 2=5-3-3 distribution as a bid of a second suit after a 1♥ promises 4-cards or more in the second suit.
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I |
2♣ Stayman Major Suit Asking. Responder usually has one or more 4-card majors, but this isn’t required if Responder plans to invite with 2NT or bid Gerber with 4C after Opener’s response
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A. |
2♦ No 4-card Major
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1. |
2NT Invitational no-trump, range depends on Opening 1NT range.
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a. |
Opener may pass with 3 hearts and
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3. |
3M Smolen game force with 4-5 in the majors. This is the 4-card major allowing Opener to correct to the 5-card suit.
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B. |
2♥ 4+ Hearts
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1. |
Pass — weak
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2. |
2NT — Notrump Invitational. Alert — may not have a 4-card major
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3. |
3♥ Invitational
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4. |
3NT To Play
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5. |
4♥ To play
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6. |
3NT — Opener makes choice between no-trump and suit contract.
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a. |
Pass
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b. |
4♠ To Play
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C. |
2♠ 4+ Spades
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1. |
Pass — weak
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2. |
2NT — Notrump Invitational. Alert — may not have a 4-card major
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3. |
3♠ Invitational
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4. |
3NT To Play
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5. |
4♠ To play
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D. |
Baze Slam Tries. These are done after 2♥ or 2♠Stayman Responses when Responder has 6.5 or fewer losers and is interested in slam.
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1. |
2♥ 4+ Hearts
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a. |
4♣ 1430 Keycard for hearts. All normal keycard options are valid.
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b. |
4♦ Balanced slam try, 6.5 losers or fewer. Control bidding on. Opener may use 4♠ Kickback.
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c. |
4♠ Unbalanced slam try 6.5 Loser hand.
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1) |
3NT What Shortness?
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a) |
4♣ Clubs
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b) |
4♦ Diamonds
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c) |
4♥ Spades
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d. |
4NT 16-17 HCP balanced without 4♥
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2. |
2♠ 4+ Spades
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a. |
4♣ 1430 Keycard for hearts. All normal keycard options are valid.
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b. |
4♦ Balanced slam try, 6.5 losers or fewer. Control bidding on. Opener may use 4NT Kickback.
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c. |
3♥ Unbalanced Slam Try with spade fit, 6.5 Loser
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1) |
3♠ What Shortness?
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a) |
3NT I have a void
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4♣ Where is your void
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4♦ Diamonds
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4♥ Hearts
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4♠ Clubs
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b) |
4♣ Club Singleton
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c) |
4♦ Diamond Singleton
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d) |
4♥ Heart Singleton
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d. |
4NT 16-17 HCP balanced without 4♠
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II |
2♦ Jacoby Transfer to Hearts. All responses must be alerted!
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A. |
2♥ Fewer than 4 hearts Alert — fewer than 4 hearts
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B. |
2♠ Super Accept Doubleton spade, 4 hearts, maximum values Alert
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C. |
2NT Super Accept 3=4=3=3 maximum values or 4=2-x-x. Alert
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D. |
3♣ Super Accept, 4 hearts, doubleton club. Alert
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E. |
3♦ Super Accept, 4 hearts doubleton diamond. Responder may bid 4♦ to transfer back to hearts. Alert
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F. |
3♥ 4 hearts, less than maximum values, may have doubleton.
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III |
2♥ Jacoby Transfer to Spades. All responses must be alerted!
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A. |
2♠ fewer than 4 spades. Alert — fewer than 4 spades.
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B. |
2NT 4=3=3=3 with Maximum values. Alert
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1. |
3♣ Asks for clarification. Alert
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a. |
3♦ 4=2=x-x. Alert
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b. |
3♥ 4=3=3=3 Alert
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C. |
3♣ Super Accept, maximum values, doubleton clubs. Alert
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D. |
3♦ Super Accept, maximum values, doubleton diamonds. Alert
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E. |
3♥ Super Accept, maximum values, doubleton hearts. Alert
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IV |
2♠ Range Ask or Transfer to Clubs. Alert
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IV |
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This is a dual-purpose bid, asking if Opener would accept an invitation to 3NT or showing a long club suit. As a range ask, this means that Responder’s 2C Stayman bid followed by his 2NT rebid is invitational and promises at least one 4-card major.
Remember that Responder’s hand may be worthless in notrump. An extreme example would be ten clubs headed by the ten opposite AKQ in Opener’s hand.
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A. |
2NT rebid by opener denies interest in game opposite an invitational hand. Responder may proceed as follows:
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1. |
Pass with invitational hand. Alert
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2. |
3♣ with 6+ clubs sign off. Alert
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3. |
3♦ 6+♣ short ♦, game forcing, or 6+♣, no shortness, with slam interest. Alert
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4. |
3♥ 6+♣ short ♥, game forcing. Alert
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5. |
3♠ 6+♣ short ♠, game forcing. Alert
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6. |
3NT with values that could have used a 4NT quantitative bid. Alert
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B. |
3♣ Would accept an invitational bid. Alert
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1. |
3M shows a 4-card major. With a 5-5 major/minor hand, Responder would first transfer to the major, then bid the 5-card minor.
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V |
2NT Transfer to Diamonds, Opener may Super Accept. Alert
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V |
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Remember that Responder’s hand may be worthless in notrump. An extreme example would be ten diamonds headed by the ten opposite AKQ in Opener’s hand.
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A. |
3♣ Super Accept with 3+ diamonds with at least 1 of the top 2 honors.
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B. |
3♦ simple accept, may have xx in diamonds.
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VI |
3♣ 5-5 minors, pass or correct. Alert
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VII |
3♦ 5-5 minors, game forcing. Alert
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VIII |
3♥ short hearts, 3=1-5-4, game forcing. Alert
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IX |
3♠ short spades, 1=3-5-4, game forcing. Alert
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X |
3NT To Play
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XI |
4♣ South African Transfer to 4♥. This allows Responder to select who is declarer. Particularly useful when playing weak and baby no-trump openings. Alert
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XII |
4♦ South African Transfer to 4♠. See 4♣. Alert
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XIII |
4♥ To Play. See 4♣
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XIV |
4♠ To Play. See 4♣
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