About ACBL Daylong Games

ACBL daylong tournaments offer a flexible way to play bridge online, and the opportunity to win ACBL Masterpoints®. You can start a game, pause anytime, and resume it later within the same day, without losing your progress.

Game specifics:

• Choose between 12 or 18 boards.
• Matchpoints or IMPs scoring options available.
• Once you start, complete your game by 5am US Eastern Time the next day.
• The game is stratified, allowing for a level playing field for players of all experience levels.
• Top finishers earn ACBL Masterpoints® and BXP.

Daylong Format Highlights:

• You'll be seated South, with three advanced GIBBO robots filling the other seats.
• Provisional results are available during play. Your final results will be sent to your BBO Mailbox, or under Recent Tournaments, in the History tab, after completion.
• You're typically dealt the "best hand" at the table (hands are rotated to give you the hand with most HCP).
• If your GIBBO partner is the declarer, you'll take over to play the hand.
• Each daylong game uses multiple "deal pools", to prevent cheating.

About GIBBO

The robots used on BBO are called GIBBO (a modern generation of Ginsberg's Intelligent Bridgeplayer). You can find out more about GIBBO's bidding system by clicking here.

GIBBO plays a relatively simple and natural 2/1 bidding system. You can find out the meaning of any bid by clicking on that bid as it appears in the bidding diagram. Furthermore, when it is your turn to bid, hovering over the various possible bids will cause an explanation of the bid you are considering (as your GIBBO partner will understand it) to be displayed. These explanations can be somewhat cryptic, but reading them carefully before you bid will help you to avoid misunderstandings with your partner.