perry93, on 2012-May-04, 07:19, said:
Thank you all. First, i open 1♦ with at least 4cards (1♣ could be a doubleton), so my error was bigger xD.
What if my p has only 4 hearts when he bids 1♥? I fit the suit with only 3 cards?
If he has 4 cd hearts only:
- if he has strong, invitational or GF hand, he may try 2nt or 3nt next, and you can raise/pass rather than returning to hearts. He should be aware you may have only 3 and not blast to 4h if 3nt is also reasonable bid with his hand for choice of games.
- if he is weak, he gets to play 4-3 fit, which is not the end of the world, often makes with careful play.
Tips for playing in 4-3 fit:
- try to avoid ruffing in the 4 cd hand if reasonably possible. If there is an unavoidable loser (or a winner, for that matter!) in a side suit consider effects of discarding it instead of ruffing.
- the opp's trumps are more likely to break 4-2 than 3-3. If you can play in such a way that it makes when 4-2, try for that. Play for 3-3 if you have no chance if they are 4-2.
- establish side suit(s) early, often the play is such that you draw 2 trumps, leave both you and one opp with 2 trumps (his higher, else you might draw them), then run your side suit, tapping opp (forcing them to ruff) and leaving you with trump control (more trumps). You want to avoid the opposite situation where they tap you, and run their side suit. If the trumps were 3-3 all along, each opp will ruff separately, but it's the same as if one opp had both (you might have made more tricks playing them for 3-3, but would have gone down if they were 4-2 and played them yourself, and 4-2 is more common).
- in some cases none of the above tactics will really work, but a crossruff can scramble you home, with enough shape and good enough trump spots.
If you are in France you may want to avoid 3 cd raises, as I understand the French std really wants 4 for the raise. American experts like to raise on 3 cds more often.
Quote
1♦ - 1♥
1NT ---> shows i have 12-14(15) with less than 4 spades and i don't have 4 hearts, right? so why N should bid 2♠? ok it shows a reverse, how many hcp? maybe 2♠ shows 5 hearts instead of 4?
This is stylistic; some people don't always bid 1s ahead of 1nt, so spade fit is still possible. This is perhaps more common playing a weak nt where the 1nt rebid shows 15-17, however.
Whether North should bid 2 spades depends on whether opener can have spades, and also if you are playing some sort of conventional checkback mechanism (artificial forcing 2c bid), that most advanced players play, but many beginners will not. The default, with no conventions agreed, is that after 1nt rebid, 2 of a lower suit by responder is non-forcing and natural. So the only way for North to force is to jump, or bid a higher ranking suit, like spades here, to find out about the 3 cd heart fit.
But pretty much 100% of better players play either or both 2c and 2d as artificial conventions, looking for heart fit among other things, in various different schemes like: NMF (new minor forcing), checkback stayman, two-way checkback stayman, two-way puppet checkback, XYZ, transfer checkback. It's among the first 10 or so useful conventions that you should eventually learn.