When first invented by Harold Vanderbilt in 1925, the intended use of the Redouble was to quadruple the score. Over time, just as with doubles, the redouble was found to be more useful for purposes other than “business.” Today, most redoubles are used artificially. Due to the rarity of this call, the topic is difficult and often unexplored in bridge teaching and literature. Most of the information that follows is intended for experienced players.
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