The Boring Club (or in Dutch: Saaie klaver) is a bidding system in the card game contract bridge, designed by Lucas Smid of the Netherlands. In this system all balanced ('boring') hands, that in most natural systems would be opened 1NT or would be opened in a suit at one level with the plan to rebid 1NT or 2NT, must be opened with 1♣. The general idea behind this system is to get the information about the shape of the hand (balanced or unbalanced) across to partner in the first bid.
The opening bids in boring club can be summarised as follows: