Posted 2008-May-16, 11:17
There are times when one should choose to open a 5 card suit rather than a 6 card suit, but they are relatively rare and NEVER involve spades and clubs.
Why?
Because you can almost NEVER have a rebid problem opening 1♣ (ignoring violent preemption by the opps, which can cause problems no matter what you open).
You can always bid 1♣ and then bid and rebid spades, showing, surprise.... 5 spades and longer clubs... isn't it nice to be able to describe your hand so well?
Whereas if you open 1♠, no matter how many times you bid clubs, you can never announce longer clubs than spades.
There is another, huge, problem with opening 1♠.
Look at what happened. Partner bid 2♥ and you bid......??
In SAYC, 3♣ shows the values to force to game... even in most versions of 2/1, 3♣ shows extras beyond a minimum opening bid, and that is in the context of partner showing gf values. In contrast, a SAYC 2/1 response may be on a misfitting 10 count. So 3♣, in basic bidding theory, is significant extra values.
And while you have a powerful playing hand, your spade suit is crap.... and you hold NO FIT and 10 hcp.
So 3♣ was a huge overbid, especially since it in no way suggested 5=6 shape.
Given that 3♣ was gf, 3♦ is simply not needed as FSF... 3♠ by partner would be unpassable.... you haven't reached game yet, so by definition it has to be forcing.
In fairness, there is a fringe minority of experts who advocate 1♠ with your hand, led by Steve Robinson who is certainly a very strong expert... but he is very much on the fringes of bidding theory in this regard. I doubt that one expert in 100 agrees with him on this point.
As for hands on which one should open the 5 card suit, there is some disagreement in the expert community.. but it is about where to draw the line, rather than basic theory.
I tend to bid shape more than the median expert. So with x AQJxx AQxxxx x, I'd bid 1♦ then 2♥... others might require a little more strength, some might even do it with a tad less. x KJxxx AQJxxx x, I'd open 1♥
x Jxxxx AKQxxx x... if I opened, and I might not, it would be 1♦ and I'd ignore the hearts unless partner bid them.
But black 2 suiters don't pose this type of problem. The only constructive auction that is anyway problematic is when partner bids 1N (whether in response to 1♣ or after an overcall). Now you may miss a 5-3 spade fit unless your hand is strong enough to bid 2♠. But these auctions rarely occur (especially the uncontested ones, when you hold 11 black cards and modest strength) and you will usually be at least as well off in clubs as in spades when this does happen.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari