Rosenkranz double

The Rosenkranz double and Rosenkranz redouble are elements of a bridge bidding convention invented by Dr. George Rosenkranz, collectively known as the Rosenkranz double. The calls are made by the partner of an overcaller (the advancer) to describe his top honor card holdings in the overcaller’s suit. ==Original version== The conventions come int
Found on http://en.wikipedia.org/wiki/Rosenkranz_double
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