Bridge Game

Rosenkrantz redouble

The Rosenkrantz redouble is used to distinguish between different types of raises in competitive auctions. When one's partner makes an overcall and the next player (responder) makes a negative double, a redouble is used to show a raise which includes the ace or king in the bid suit; an actual raise shows a similar hand but denies a top honor.

This convention is named after its inventor, George Rosenkrantz. Variants include Guildenstern, in which the meanings of the redouble and direct raise are reversed, and Munson, in which the redouble shows a two-card raise including the ace or king. In both cases, the reasoning is that a better hand for the bid suit should raise the level of the auction to make things difficult for the opponents.

Home | Up | Blackwood Convention | Canap? | Drury | Drury convention | Flannery | Forcing notrump | Game try | Grand slam force | Jacoby 2NT | Jacoby Transfer | Kamikaze 1NT | Lebensohl | Lightner double | Meyerson convention | Michaels cuebid | Multi 2 diamonds | Relay bid | Rosenkrantz redouble | Semi-forcing notrump | Splinter bid | Stayman Convention | Takeout double | Unusual notrump | Weak two bid | Defenses to 1NT

Bridge card game, the most popular card game mafr in the world.