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BRIDGE

RESPONSES TO OPENINGS OF 1♦


If your partner has opened 1♦, his/her distribution could be almost anything. It is very important to find out more about that distribution, and in particular, to see if a fit in a major suit can be found.

The first requirement for a response is to have 6 DP or more for a response at the 1 level, and 10+ DP for a minimum response at the 2 level (except for the 3♦ response). Minimum point requirements are even higher for bidding after an interfering bid.

Responses are classified as responses to with no interference and with interference.

Responses to a 1♦ Opening with no Interference

Your bid  Requirements  Comments 
1♥/1♠ This is a forcing bid showing a 4+ card major suit. You may also have 4 cards in the other major. With 4-4 in the majors, bid 1♥ first. With 5-5 or 6-6 in the majors, bid 1♠ with 6-9 DP, and 1♥ with 10+ DP. With two unequal majors (6-5, 7-5, 7-6 or 8-5) bid the longer suit first.
1NT Denies a 4-card major suit or longer (4+), and promises 5-9 HCP. Should have a balanced or semi-balanced distribution.  
2♣ Forcing bid, showing 10+ HCP and at least a 4-card (but normally 5+) suit. Denies a 4-card major.  
2♦ This is a forcing bid showing at least 5 diamonds, and denies a 4+ card major. Promises 9+ HCP. Called an inverted minor single raise. An excellent way to decide between NT and minor-suit contracts.
2♥/2♠/3♣ These are all forcing bids (essentially to game). They promise nice 5+ card suits. Minimum points: 16 HCP.  
2NT Denies a 4-card major suit or longer (4+), and promises 10-11 HCP. Should have a balanced or semi-balanced distribution.  
3♦ This is a pre-emptive bid, showing 5-card support for diamonds and no more than 8 HCP. Lower point limit is determined by vulnerability. No 4+ card major suit. A complementary bid to the 2♦ inverted minor raise.
3♥/3♠/4♣ These are splinter bids, normally forcing to game. The suit bid shows a singleton or void, good 5-card support for diamonds and 13+ HCP. No 4+ card major.  
3NT The usual bid with 12+ HCP, no 4+ card major and well-distributed points.  
4♦ Forcing to 5♦ at least. Good 5+ card diamond support, no 4+ card major, 16+ SP and at least 3 MCCs. A slam try.
4♥/4♠/5♣ These are essentially pre-emptive bids with a 7+ card suit and 10+ HCP. With any perceived chance of 3NT (rather than 4♥, 4♠, 5♣ or slam), other bids should be made.
4NT Blackwood. Very strong try for 6♦ or 6NT. All you care about is how many Aces opener has.
5♦ You have the long suit and the points to play a game contract, but no more than 2 MCC.  

Responses to a 1♦ Opening after Interference

RHO action  Your bid  Requirements  Comments 
Double Pass Generally with 0-7 DP. See below.
Redouble This bid promises at least one 4-card major, and 8+ DP. Forcing  
1♥/1♠ 8+ DP and a 5+ card suit. May have 4 in the other major. Forcing. You may lie a bit with a nice 5-card suit, and bid it with 5-7 DP.
All other bids Same as above.  
1♥/1♠ Pass Generally with 0-7 DP.  
Double This forcing bid is the negative double, and generally shows 8+ DP and exactly 4 cards in the unbid major. If RHO bids 1♠, a double can even mean 5 hearts and 8-9 HCP (as you should not go to the 2 level with <10 points).  
1NT/2NT/3NT 8-9/10-11/12+ HCP but with some control of opponent's suit at the 1NT level and good control at the 2/3NT level. No 4+ cards in the unbid major.  
Cue-bid (e.g. 2♥ over 1♥) Shows a very strong hand (13+ SP) with 5+ diamond support and shortness in or strong control of the opponent's suit. Forcing.   
Other bids Same as above  
1NT Pass Generally with 0-9 DP.  
Double For penalties.  
2♣/2♥/2♠ 8+ DP, with 5-card suit.  
2♦ 5-8 DP, with 5-card support.  
2NT/3NT 10-11/12+ HCP. No 4-card major. You are a brave player!
3♦ 9+ DP, with 5-card support.  
Other bids Same as above  
2♣ Pass Generally with 0-7 DP.  
Double This is the "negative double", showing 10+ DP and asking for a 4-card major. Forcing.  
2♦ 5-8 DP, with 5-card support.  
2♥/2♠ 8+ DP, with 5-card suit.  
2NT/3NT 10-11/12+ HCP, with some control of clubs. No 4-card major.  
3♣ Cue-bid showing a strong hand with 5+ diamond support and singleton or void in clubs. Forcing.  
3♦ 9+ DP, with 5-card support.  
Most other bids Same as above  
Interference bids above 2♣ Pass If you are not strong enough to bid something or double.  
Double (a) At the 2- and 3-level this promises 10+ DP and an unbid 4-card major.  
Diamond bids Bid your strength if you can, otherwise pass or double. You should have 5+ diamonds and 10-12 SP for 3♦, 13-14 for 4♦ and 15+ for 5♦.  
Cue-bid (e.g. 1♦ - 2♥ - 3♥) Shows a strong hand with either 5+ diamond support or a biddable long suit. Forcing.  
New suit at minimum level 5-card suit and enough strength to bid at the level required. Unless already at game, forcing.  
New suit with jump shift 5-card suit and wishing to show extra strength. Unless already at game, forcing.  
NT bids Enough strength to bid at the level required. Opponent's suit is controlled.  



Copyright Gabor Sandi 1998-2019

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