Part 6
Question 4: If the opponents are bidding, should we outbid them? (when we think we might make what we bid)
Very hard question, to which I will proffer a pretty simplistic answer that will be good enough for now.
If you don't have a known fit, then no, except in specific cases that you'll learn individually (such as takeout doubles, suit and notrump overcalls, weak jump overcalls, and conventional overcalls).
If you have a fit, what matters most is how many trumps the combined hands have. If it's only eight (assuming partner has the minimum of what he's promised), then you tend not to; with nine or more, you err on the side of bidding.
Also, extra shape and fit matter a lot. If you have a singleton in any suit except one that partner is known to hold, that's good. (Exception -- if you have already said or implied this to partner, as with a takeout double, then shut up and let him decide.) If you have a void, that's very good. A doubleton in the opponent's suit is
not good. If you have shortness in your partner's side suit, that's bad.
If you know that the partnership has eight or more cards in each of two suits, strongly prefer to keep bidding. With a big (9+ cards) double fit, bid, then bid some more.
If your high cards are mostly in your long suits, tend to bid. If they're in the bad guys' suit, tend not to.
Specifics (all on the assumption that you have a fit):
- At the one level (by which I mean you can make your bid at this level), bid.
- At the two level, bid.
- When opps have bid two and you would have to bid to the three level to outbid them, usually bid; if you have nine trumps, definitely bid.
- When opps have bid to the three level, do not outbid them at the three level unless you're almost sure you have nine trumps, and not even every time then -- it depends on fit, also.
- Almost never compete at the four level unless you know you have ten trumps, or you think it was reasonably likely you'd have bid game if there hadn't been interference. If you have decent stuff in the opponents' suit, don't bid.
- Almost all bids at the five level should be considered sacrifices (see next part) unless you have ten-plus trumps and a really good fit. Don't do it unless you're sure. If the opponents' do it, don't out bid them unless you're really sure, and then, still don't do it.
As a general rule, the hand with extra (more than promised or suggested) shape is the one that makes the decision. If you have the shape you've promised, general do not bid -- even if you have extra high-card strength.
It is rarely right to compete in notrump -- if you're thinking of doing that, you should probably double them instead, unless you're seriously thinking of bidding game (and maybe even then).