These opening bids are based on the Precision Club, feature the opening of a 5-card Major suit, and employ a reduced value for a No Trump opening. The 1 No Trump Forcing convention after an opening of a Major suit is employed. Opening 3 Clubs promises a strong, semi-solid and strong Club suit, whereas a 3 Diamond opening promises an unknown solid suit with no side values.

The original Precision Club bidding system consists of a strong club system that was invented by Mr. Chung Ching Wei. This bidding approach was employed by him and team mates from Taiwan in the early 1970s. The success of this approach gained adherents and many bridge players of different nationalities began experimenting with the basic concept. Today the most common feature of all bidding systems based on the concept of Precision, as originally conceived, is the feature of a strong Club opening.

This variation on the opening bids was developed in Sweden and the originator is unknown.

Opening Bids Only

Bid Strength Meaning
1 : 16+ high card points Shows any shape.
1 : 11-15 high card points Shows various shapes.
1 : 8-15 high card points Promises 5 plus Hearts.
1 : 8-15 high card points Promises 5 plus Spades.
1 NT: 13-15 high card points Shows balanced shape.
2 : 11-15 high card points Promises 5 plus Clubs
2 : 11-15 high card points Distribution: 4-4-4-1 or 5-4-4-0; Diamond shortage.
2 : 6-10 high card points Promises 6 plus Hearts.
2 : 6-10 high card points Promises 6 plus Spades.
2NT: 22-23 high card points Shows balanced shape.



If you wish to include this feature, or any other feature, of the game of bridge in your partnership agreement, then please make certain that the concept is understood by both partners. Be aware whether or not the feature is alertable or not and whether an announcement should or must be made. Check with the governing body and/or the bridge district and/or the bridge unit prior to the game to establish the guidelines applied. Please include the particular feature on your convention card in order that your opponents are also aware of this feature during the bidding process, since this information must be made known to them according to the Laws of Duplicate Contract Bridge. We do not always include the procedure regarding Alerts and/or Announcements, since these regulations are changed and revised during time by the governing body. It is our intention only to present the information as concisely and as accurately as possible.