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- 3♣=5+C; 13+ total points
- 4♣=biddable C
- 4N=quantitative; 15-16 HCP
- 6N=16-20 HCP
Could/should 4♣ be Gerber instead?
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Slam investigation over 1N-2C-2D
#1
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Posted 2011-November-03, 12:16
In this sequence:
Could/should 4♣ be Gerber instead?
Could/should 4♣ be Gerber instead?
#2
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Posted 2011-November-03, 13:24
That's how I would play it. 4♣ is Gerber after a NT opening and no suit has been agreed on.
#3
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Posted 2011-November-03, 21:15
I misunderstood Bradley's question, I thought he was just soliciting opinions about the best use for this 4♣ bid. I've investigated further, and GIB doesn't have an explicit meaning for the sequence, so it's just falling into the default "undefined bids are natural" rule. I'm discussing with Georgi whether there's a missing rule for this sequence in the bidding database.
This also prompted me to look at some other NT sequences: 4♣ after a suit response to Stayman also falls into that default rule, and 4♣ after a Jacoby transfer is strong and natural; I think both of these should be splinters. And it plays that 4NT after a Jacoby transfer is Blackwood for the transfer suit (e.g. 1NT-2♦-2♥-4NT is Blackwood for diamonds), which is wrong in several ways.
I'll bring these up with him as well.
This also prompted me to look at some other NT sequences: 4♣ after a suit response to Stayman also falls into that default rule, and 4♣ after a Jacoby transfer is strong and natural; I think both of these should be splinters. And it plays that 4NT after a Jacoby transfer is Blackwood for the transfer suit (e.g. 1NT-2♦-2♥-4NT is Blackwood for diamonds), which is wrong in several ways.
I'll bring these up with him as well.
#4
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Posted 2011-November-03, 21:27
Ignore the second part of my last post. When I was checking out those sequences, I forgot to put in the opponents' passes. So I was looking at auctions like 1NT (2♣) 2♥ (4♣) and 2NT (2♦) 2♥ (4NT). After correcting that, I got the correct splinter and quantitative meanings.
I'm still new here and just getting used to using the GIB testing tools.
I'm still new here and just getting used to using the GIB testing tools.
#5
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Posted 2012-August-10, 02:56
That 4♣ bid (following 1N-2♣-2♦) is still undefined. Can we please define it as Gerber?
#6
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Posted 2012-August-10, 03:56
Why Gerber? Why not Baron, for example some (441)4 hand looking for slam? I do not know the GIB system well enough to suggest anything more imaginative, although I am sure there are plenty here who could. What kind of hand wants to Gerber after Stayman but not immediately anyway? You can also remove the "after Stayman but not immediately" from the previous sentence if you want.
(-: Zel :-)
#7
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Posted 2012-August-13, 16:24
lol Zelandakh. Do you also write "hell freezes over" on the standard CC where it says "Gerber. When:______"
I ♦ Transfers
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