fromageGB, on May 27 2010, 01:21 PM, said:
I think any method is poor if you have a penalty double. Justin's paraphrased comment "if you have a major and a minor just forget the minor" is correct.
However, if you are prepared to give up the penalty double, I like X = 5m + 4M , or both majors. Partner's replies are 2♣ denies a 4 card major, 2♦ = 4 spades but not 4 hearts, 2♥ = 4 hearts, does not deny spades. If no major fit is found responder just bids or passes his 5 card suit, and over 2♥ can bid 2♠ safely knowing parter can convert to your 5 card minor.
This means 5M + 4(+)m hands can be shown by bidding the minor. Partner can pass the minor or play in 2 of the major by bidding 2♥. I think showing the minor is a huge improvement on showing the major : you can play in 2m.
2♥ and 2♠ are natural single suiters.
I find it useful to be able to find 4/4 major fits.
We call this method "vertigo", EBU level 2 but don't know about the USA.
This is allowed on the ACBL general chart.
On the other hand, I don't like it particularly much. Among the issues:
(1) I don't really like bidding a minor to show that minor and an unknown major, especially when the major is longer. You're still going to want to play in the major most of the time (and bidding the minor removed your preemptive effect), and the times you gain by getting to play 2m may be offset by times you play in 2m with a big major suit fit because partner was afraid you had the other major, or the times you let the opponents get a cheap bid in.
(2) It's easy to find your 4-4 major fits if you're always willing to play in 3m when you don't have one. The issue in this structure is that if you double with 5
♣-4M you will end up in 3
♣ when there's no 4-4 major fit, which is often very much too high. The same can happen with 4
♠/5
♦ opposite partner with 4+
♥.
(3) There is a problem if you have 5m/4M hand and partner has a long heart suit. For example, say the auction starts with 1NT-(X)-Pass and advancer has 6
♥. If he bids 2
♥, you will pass when your have hearts (so you have a ten-card fit, can probably make 4
♥, and played in a partial)... and you will pull when you
don't have hearts (meaning you can't play 2
♥ anymore, which is now probably your best partial). Of course, anything else he bids seems bad too.
(4) You don't have any call with a diamond one-suiter. It's actually pretty annoying to bid 2
♦ on this hand, since it preempts the opponents transfers (makes them wrong-side a bunch of contracts). Of course, they could play "stolen bid" but then you can't ever be doubled for penalty (or takeout) so you can bid 2
♦ on all kinds of junk and steal them blind.
Adam W. Meyerson
a.k.a. Appeal Without Merit