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What's the exact meanings of this double?

#1 User is offline   lycier 

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Posted 2016-May-25, 07:17



South 4 is incorrect .
Double says " 5+,13-21hcp,14-22TPs."
If north doesn't double but pass, its meanings is " No suitable call --- 5+,11-21TPs,12-22TPs."
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