rule of two and three

Definition of rule of two and three

: a bidding principle in contract bridge: a player who makes a preemptive bid should not overbid by more than two tricks when vulnerable or three tricks when not vulnerable

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“Rule of two and three.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rule%20of%20two%20and%20three. Accessed 28 Feb. 2020.

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