Opinion: Blackwood or not?
4NT on this auction is:
44 members have voted
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1. 4NT on this auction is:
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Roman Keycard Blackwood (RKCB)agreeing spades (5 controls)33
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RKCB - agreeing spades, but count HK too (6 controls)1
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Normal blackwood just asking total number of aces3
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Quantatative, asking opener to continue if he has extras5
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Other2
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