http://tinyurl.com/yj262pk
This is from a free robot IMPs tournament. Listed in ascending order of HCP shown by South, various auctions were:
(1) 2NT-3♥-3♠-3NT-4♠
(2) 2NT-3♥-4♠-4NT-5♦-5♥-6♦-6♠
(3) 2♣-2♦-2NT-3♥-3♠-3NT-4♠
(4) 2♣-2♦-2NT-3♥-4♠-4NT-5♦-5♥-6♦-6♠
(5) 3NT-6NT
(6) 2♣-2♦-3NT-6NT
(A) If GIB had bid 4♣ instead of 3NT in auctions (1) and (3), would that have been natural or Gerber? If natural, why didn't he do that?
(B) In auction (2), South shows 21HCP and 4♠. In auction (3), South shows 22-24HCP and 3-4♠, but not both 24HCP and 4♠. (Auction (4) shows 24HCP+4♠.) Why does GIB go to slam on (2) but not (3)?
(C.) GIB says that South shows 25-27 on both (5) and (6). Why would two sequences show the same thing? Shouldn't (6) show more than (5)?
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Opposite Monster NT Sometimes slam, sometimes not
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