- AUC: 1C Opening
- Presents the Polish Club system; with details on the bidding requirements and a list of proposed responses to the 1C opening.
- Bridge 7
- Caters 5-card majors style. With information on the exercises, bidding principles and instructions on the software provided.
- Bridge Files
- Offers advanced systems used by players. Contains information on subscription instructions plus prices.
- Bridge Guys
- Information on the game history, conventions offered and related links.
- Bridge is It
- Presents game systems for a modern standard club of players. Displays details on bidding practice, conventions and programming tools.
- Bridge World Standard
- System used in the Master Solvers Club. With information on bidding methods and defense strategies.
- Caliper
- Bidding system based on Magic Diamond and Symmetric Relays. Contains particulars on options in opening bids, project status, sample boards and resources.
- Chilli Bidding System
- Recounts the history and fundamentals of the system. Provides information on its history, auctions and rules.
- Contract Bridge Culbertson System
- Features an electronic tutor in learning the game. Shows details on bidding options, playing probabilities and tips on establishing suits.
- Coyote 2/1 Game Force
- American standard system for bidding. Includes information on openings, general conventions and updated versions.
- Dan Neill – Contract Bridge Professional
- Proffers a system for winning ACBL games. With articles about club play tips, recent tournament successes and related links.
- Diamond Major
- Bridge club for Contract and Rubber players. Contains details on the overview of the system proposed, no-trump response examples and notes on a competitive bid.
- Donald Varvel – An Unassuming Club
- Presents a game system in which 1C shows any of a variety of hands and 1H/S shows at least 5 cards. Includes information on the opening bid structure and bidding options over the 1C opening.
- Kent Feiler’s The Bridge
- Discusses the principles of Colonial Acol and LISA Bridge systems. Includes a criteria screen for hand dealing.
- Liu, Hong’s Bidding Cards
- Presents bidding options on card openings and conventions. With details on the system's advantages.
- MAF System
- Five-card major that comprises 9 different opening bids. Displays information on the system along with instructions of its usage.
- REGRESsion
- Describes the basic schemes in using weak opening system; with details on the structure of opening bids, convention card, and basic sequences.
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