What is acol?

Acol is a card game bidding system used in the game of bridge. It was developed in the 1930s by the British Bridge Association and has since become one of the most commonly used bidding systems in the United Kingdom and other English-speaking countries.

Acol is a natural bidding system, meaning that bids have specific meanings that correspond to the strength and distribution of a player's hand. It is known for its simple and intuitive structure, making it popular among beginner and intermediate players.

Some key features of the Acol bidding system include a strong 1NT opening bid, a weak two bid showing a six-card suit, and a 4NT bid as Blackwood for asking for aces.

Acol has been refined and revised over the years, with different variations and conventions being developed to suit different playing styles. Despite this, the basic principles of Acol remain the same, making it a versatile and adaptable bidding system for players of all levels.