an Entity references as follows:
In the card game contract bridge, a forcing bid is any call that obliges the partner to bid over an intermediate opposing pass. Owing to the partnership's bidding system or a bridge convention, partner must "keep the bidding open", i.e. not pass, thereby preventing his left-hand opponent from ending the auction with a pass and enabling the "forcing bidder" to bid further. * responses to preempts * responses to overcalls * various responses to a reverse bid of opener * 2NT in competitive bidding situations