Why was duplicate bridge created?
Card editor of the London Field W.H. Whitfeld published this bridge problem in 1885. South is declarer and has the lead with hearts as trump. With a sophisticated finesse, South can win every trick. South begins by leading the ace of diamonds, which, depending on what the opponents discard, opens a possible finesse of North's jack of diamonds. Next, South passes the lead to North with a spade that North trumps. North then leads the last heart, and South discards the 10 of clubs. With the lead of the last trump and then the ace of clubs, the defenders are presented with an insurmountable dilemma. East must hold two diamonds or South takes the last two tricks in the suit by discarding a spade. However, in order to hold on to two diamonds, East must discard the jack of spades, which in turn would force West to hold the queen of spades. Since West also needs the queen of diamonds and the jack of clubs to avoid losing a trick, a discard from any of the three suits will allow South to win all of the remaining tricks by an appropriate discard.
Duplicate bridge was created to address a primary limitation of rubber bridge: the significant influence of luck. In standard games, a player who consistently receives better cards can easily outperform a more skilled opponent, effectively nullifying the impact of individual skill.1
By requiring each hand to be played multiple times by different players under identical conditions—using the same cards, dealer, and vulnerability—duplicate bridge minimizes the role of chance. Because every participant plays the same hands, the objective shifts from simply amassing points to bidding and playing those hands more effectively than the other pairs who encounter the same cards. Consequently, the pair that achieves the higher score is recognized as the more skillful, as the results are directly comparable across the field.12