• Strong club system
  Strong club system
  The Strong Club System is a set of bidding conventions in the game of contract bridge. It is classified as an artificial type of bidding system since the bids are highly codified.-Explanation:...
  
  : 1 opening promises 17 or more HCP, with step answers showing controls (K=1 and A=2 controls) or HCP. 1 being negative showing 0-5 HCP and 1 showing 6-12 HCP but with no more than 2 controls, 1 showing 3 controls, 1NT showing 4 controls etc.
• Four-card majors: 1 and 1 and 1 openings are limited (12-16 HCP),
• Canapé
  Canapé (bridge)
  Canapé is a bridge bidding system where the second suit bid is always longer than the first. The name Canapé refers to a small bite presented before a big meal....
  
  . With two-suited hands, the opener's second bid is in the longer suit, whereas other more popular systems bid their shorter suit second. However, unlike "fellow" Roman Club
  Roman Club
  Roman Club is an artificial bridge bidding system devised in the 1950s by Giorgio Belladonna and Walter Avarelli of Italy's Blue Team. They used it to win twelve WBF World Teams Championships, three Olympiads and numerous European and National titles...
  
  , there are many exceptions to this rule in Blue Club.
• 1NT ranging from 13-17 high card points. It can be either 13-15 pts which is essentially a replacement bid for a balanced club suit with two specific shapes, 3=3=3=4 and 3=3=2=5. It can also be 16-17 pts and balanced. A more modern treatment is to play the lower range as 13-14, and the upper range as 15-17, this removes some of the strain on this bid.

Advantages

• Blue Club gave significant advances in finding safe slams, which other systems of that time could miss.
• Non Blue Club players consider the system to be complicated and artificial but practitioners know that it is relatively natural.
• The 1NT has a wide range (13-17), which has an advantage of forcing defenders to wait for one round before knowing whether it is the strong or the weak NT, which can make their competing for a part score difficult.
• Canapé bidding on moderate hands has the advantage that the opener typically bids the second and strongest suit at the 2 level.
• In particular, Blue Club is purpose built, whereas other systems such as Standard American
  Standard American
  Standard American is a common bidding system for the game of bridge in the United States, also widely used in the rest of the world. This system, or a slight variant, is learned first by most beginners in the U.S. and may be referred to as 'Goren'; a dominant version used in on-line computer...
  
   have steadily evolved to enable players to compete against other modern systems. This evolution has had the effect of making such systems much more complicated and convoluted at higher levels. The Italian team captain, Carl Alberto Perroux, is quoted as saying, "a standard Ford, however much jazzed up, won't beat a Ferrari."

Disadvantages

• The wide ranging 1NT opening can lead to responder having to probe for game more often and is not always easy in competition. The more modern treatment seems to be to play 1NT as either 15-17 balanced or 13-14 with the club hands (but not both).
• Due to inconsistent canapé, responder has no idea which is the long suit with sequences that go 1X−1NT−2Y.
• As with all strong club systems, the 1 opening is vulnerable to preempt
  Preempt
  Preempt is a bid in contract bridge whose primary objectives are to thwart opponents ability to bid to their best contract, with some safety, and to fully describe one's hand to one's partner in a single bid. A preemptive bid is usually made by jumping, i.e. skipping one or more bidding levels...
  
  s, especially at unfavorable vulnerability.

External links

• Blue Club, Calgary Casual Style