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Strange bid over 3NT

#1 User is offline   Bbradley62 

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Posted 2011-October-09, 18:39

Why would North bid 4♠ over 3N? Independent of whether North should make that bid is a problem with the description of that bid. If North has 3♠, how strong can he actually be? With 3♠ and 7-10 total points, North would have bid 2♠ over 1♠. So, he could have 6 or 11-12 total points? Can't differentiate? What would 4♣ have been over 3N?
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#2 User is offline   aguahombre 

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Posted 2011-October-09, 19:07

gib apparently is programmed to the agreement that the 3NT rebid shows six spades; 2NT shows 18-19, so it is a logical inference used by many of us humans.
"Bidding Spades to show spades can work well." (Kenberg)
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#3 User is offline   Bbradley62 

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Posted 2011-October-09, 19:26

But GIB is clearly programmed to explain the 3NT rebid as showing exactly five spades.
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#4 User is offline   barmar 

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Posted 2011-October-10, 00:32

I think 4♣ would have been a weak hand with long clubs.
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