Acol is a natural system of bidding, meaning that your bidding is normally a declaration of your holding and not some coded message. The first thing you need to. This Acol bridge crib sheet is ideal for beginners. Have it handy while you are playing your bridge games! The left hand column shows Opening Bids. The middle. A quick overview of Standard and Acol bidding systems and how to choose which one to play.

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The Acol System is used by many bridge players around the world, and is employed mainly in British tournament play. It is a different system than the American 5-Card System, which employs the agreement that a Major suit opening bid demands at least a 5-card suit.

The Acol System was the brain-child of various bridge players, among whom were Mr. Maurice Harrison-GrayMr. Iain MacleodMr. Terence Reese and Mr. The history of the Acol System is rather unique in that it was first employed in in a relatively small North London Bridge Club located aclo Acol Street, and hence the name.

Acol – Wikipedia

The bridge players mentioned above relied heavily on the early writings about the Game of Bridge written by Mr. If the visiting bridge player wishes to improve his understanding of this particular bidding system, then the purchase is strongly recommend of the following publication authored by Mr.

Patrick Jourdain in the year Following are several basic guidelines, conventional methods, and approaches, bidxing are employed in the basic Acol System. The bbidding is definitely incomplete, but the idea is to understand the basics first, and that is the sole purpose and intention of this web presentation.


Since one of the cornerstones of the Acol bidding system is the flexibility of biddinh opening of 1 No Trump the player should always pay particular attention to the approach agreed upon by the opponents. The range of the values of the No Trump bid may vary considerably depending on the state of vulnerability and sometimes even on the opening seat.

All of these optional agreements can be found on this site by returning to the Conventions web page and performing a search with the provided Google site search feature.

Also, any bridge player interested in the Acol bidding system has a large selection of publications, which deal solely with this approach.

The Acol Bidding System

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. 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 biddlng Laws of Duplicate Contract Bridge.

It is our intention only to present the information as concisely and as accurately as possible.

The weak No Trump is applied when the players are not vulnerable. The original No Trump range was high card points, but this range has been reduced to high card points over the years. As a precaution always make a quick review of the convention chart to ascertain the 1 No Trump range biddnig. The strong No Trump is applied when the players are vulnerable. The original No Trump range was high card points, but this range has also been reduced to high card caol.


Some bridge partnerships apply the weak No Trump and the strong No Trump at any vulnerability.

Basic Acol Bidding System

Both limit raises and No Trump responses are generally not game-forcing in the basic form of the Acol acpl system. Systemm an opening bid of 1a response of 2 No Trump or 3 is encouraging, but not game-forcing. Each response shows about 11 high card points. If the opening is one of a suit, then the required strength and Quick Trick ability can be slightly lower than in American methods, especially if the opener holds a 6-card suit.

Two-Over-One responses were originally made even on weak hands with about 8 points, but are presently played using the strength required for traditional American Standard, which is approximately 10 high card points. However, some Acol players feel that this response is forcing to at least 2 No Trump. A strong, artificial 2 Clubs opening bid means an artificial strong opening and is forcing to 2 No Trump. Gambling 3 No Trump equals a long and strong Minor suit with at least two other suits protected with a stopper.

A 4 No Trump Opening is a bid asking for specific Aces. The partner may not have passed previously when this bid is applied.