What is the philosophy?
#1
Posted 2008-November-05, 02:14
♠ 7
♥ KQ10943
♦ AJ87
♣ Q4
1♥ - 1♠/1NT
2?
If you rebid 2♥, you show six of your 13 cards; by rebidding 2♦ you show at least nine. I understand that 2♥ shows a minimum, but where I come from 2♦ could be a minimum (11-15) as well as a medium (16-18).
What is the philosophy behind rebidding the major rather than show that your hand is two-suited, not one-suited?
Roland
#2
Posted 2008-November-05, 02:19
2) one heart rebid 2d. Max!
#3
Posted 2008-November-05, 02:26
Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. mstr-mnding) tr. v. - Any bid made by bridge player with which partner disagrees.
"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"
"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
#4
Posted 2008-November-05, 03:27
mike777, on Nov 5 2008, 03:19 PM, said:
2) one heart rebid 2d. Max!
I don't understand this comment Mike. Please explain.
#5
Posted 2008-November-05, 04:23
mike777, on Nov 5 2008, 10:19 AM, said:
2) one heart rebid 2d. Max!
Sorry, I don't understand a word of what you are saying. Could you please answer the question I ask? I am not looking for a reply to what a 2♥ opening might show in your methods.
Your post makes me think of cherdano's signature:
"Some other time I will post something useful, sorry."
Roland
#6
Posted 2008-November-05, 04:34
Also i believe after 1NT its more sensible to hide 4m, because we are likely to be in part score or at most in game and in such showing the D suit will rarely help us.
#7
Posted 2008-November-05, 06:48
If you play that a weak two shows 5-11, then...
1♥...2♥ shows a hand with a minimum of 12 HCP and therefore, to some degree, is a "sound" opening hand, more Roth-Stone as a sequence.
If, however, you open many Rule-of-20 hands, then...
1♥...2♦ shows a distributional hand (at least 5-4), such that the minimum with minimal shape is 11, but 10 or 9 HCP is very possible. Hence, a 2♦ rebid might be weaker, in a sense.
So, perhaps the goal of the "mainstream" in North America might be to assure partner of HCP soundness, whereas non-NA folks have more of a focus on shape bids and assuring shape valuation.
One non-NA counter, I would think, to the NA position is that a 2♥ rebid, although promising 12+ HCP, shows what could be a base of 10 losers (6322), with honor cards chipping down that base. A 2♦ rebid, in contrast, shows a base LTC of 9, or a trick better, before honors even kick in. Hence, which is really showing the sound opening?
Another non-NA counter is that precise range is less important than description of the location of value.
If you think about familiarity with bids like a 2♥ opening showing hearts and a minor but some range like maybe 11-16 HCP, or 8-12, but a more focus LTC or trick-taking "range," not so familiar in NA, this all seems to fit together. Whether you use the gadget or not, familiarity with the style suggests a different focus of evaluation and, hence, a different idea as to what to rebid in (perhaps) close-call auctions.
-P.J. Painter.
#8
Posted 2008-November-05, 07:59
1) Bidding major-minor-major shows a strong hand.
2) An historical preference for the major based on the fact that matchpoint pairs (and, to a lesser extent, BAM) was the predominant form of competition in North America from the 30's through the 80's.
#9
Posted 2008-November-05, 08:44
He is going to pass the 2D bid, although the 4-4 may be technically superior, it would need to beat the responding 2H bid by 2 tricks.
Playing a Roth-Stone style, changing suits implies extras, so even the minimum could raise to 3.
In NA, game is about finding major suit fits and 3N, Your 4 card suit does not really rate to be trumps.
On this hand, your 6 card suit is very playable opposite a singleton. With responder having 3-1-3-6 and a 1 bid hand playing a forcing NT, What does he bid over 2D?
Now, if my hearts were Kxxxxx and diamonds were AQJx, that would be different.
#10
Posted 2008-November-05, 08:57
#11
Posted 2008-November-05, 09:21
When you get another chance to bid then you can usually show your 6-4 shape. An advantage of 2H is that the auction 1H-1NT-2H-2NT-3D is NF while 1H-1NT-2D-2NT-3H is forcing. On the hands where partner is weak you probably do better after a 2D rebid as that is more likely to land you in a playable spot. Again, the stronger the hearts, the less likely this is. 2D can also gain when you have a big diamond fit and partner would pass 2H. On the ctual hand with the slow heart cards this is not very likely.
By the way, I have never found the argument "you describe 9 cards instead of 6" very convincing. You can apply the same argument to make a case for opening 1NT on a 2524 shape (after all, you would describe 8 cards instead of 5!).
- hrothgar
#12
Posted 2008-November-05, 11:11
if you play a forcing NT, e.g. you have agreed to
play 2/1, than openers rebid in a minor does not
necessarilly promise a 4 card suit.
As an example take the sequence
1S - 1 NT (1)
???
(1) forcing
The question is, what do you bid with 5332 and
12-14.
You can bid 2S, in which case 2S does not promise a
carder, you can bid 2 NT, which may be too high, if
the forcing NT contains hands with 4-7 and 3 spades,
or you can invent a minor.
If you like, that 2S showes 6 cards, than you have to
bid a minor, hence the statement, if I bid 2m I show
9 cards, if I bid 2M I show 6, is not true, at least for
such a system.
With kind regards
Marlowe
Uwe Gebhardt (P_Marlowe)
#13
Posted 2008-November-05, 16:42
Walddk, on Nov 5 2008, 03:14 AM, said:
I think that many strong partnerships use this method, and i think it has certain advantages:
a)usually second bid defines hand type, balanced, one suiter or two-suiter, third bid if possible adding more clarification about extraforce +/- extrashape
b ) on minimum hands that are not affording 3rd bid, usually it's more important showing a-6 carder because:
- when partner holds 2 hearts can invite on marginal hands and can place the contract in the right strain(4M instead of 3nt)
- playing a 6-1 major fit is better than a 4-3 minor fit
c) after defining first suit, a 6-carder (6-3-2-2, 6-3-3-1, 6-4-2-1, 6-4-3-0 shapes) is more frequent than a 5-4+ two-suiter (5-4-2-2, 5-4-3-1, 5-5-2-1, 5-5-3-0, 6-4-2-1, 6-4-3-0 shapes) with second suit specified
d) as Han said, some sequences are better defined: 1H-1NT-2H-2NT-3D is NF while 1H-1NT-2D-2NT-3H is forcing.
#14
Posted 2008-November-07, 08:30
Form of scoring is also important as Han pointed out.
http://forums.bridge...topic=24279&hl=
We are all connected to each other biologically, to the Earth chemically, and to the rest of the universe atomically.
We're in the universe, and the universe is in us.
#15
Posted 2008-November-07, 10:35
han, on Nov 5 2008, 04:21 PM, said:
Isn't this fact a consequence of the decision to rebid 2H on minimum hands? If (for the sake of argument), you generally rebid 2D on all 2-suiters, then you would not play 1H - 1NT - 2D - 2NT - 3H as forcing (and the first auction wouldn't exist).
Or do you mean that being able to play 1H - 1NT - 2D - 2NT - 3H as forcing is one reason to play this way in the first place?
Of course, in Acol-land, the auction 1H - 1NT - 2D - 2NT doesn't really exist, so yuo wouldn't have this problem.
#16
Posted 2008-November-07, 10:39
Similarly, a 'two-step' sequence like 1♥ - 1N - 2♦ - 2N - 3♥ HAS to be forcing.
What I don't understand is the rationale behind rebidding 2♦ on Roland's hand. Is it simply to find a better partial?
#17
Posted 2008-November-07, 10:57
han, on Nov 5 2008, 10:21 AM, said:
If you had to make an argument to open 1NT with that shape, I think that's the best one!
#18
Posted 2008-November-07, 12:06
- hrothgar
#19
Posted 2008-November-07, 12:13
Quote
Or do you mean that being able to play 1H - 1NT - 2D - 2NT - 3H as forcing is one reason to play this way in the first place?
Of course, in Acol-land, the auction 1H - 1NT - 2D - 2NT doesn't really exist, so yuo wouldn't have this problem.
The question was why some North Americans would bid 2H, so Acol is irrelevant. If the auction 1H-1NT-2D-2NT doesn't exist for you then imagine I wrote 1H-1S-2D-2NT.
The fact that a Limit Bidder might play that 1H-1NT-2D-2NT-3H is non-forcing is also irrelevant, as far as I know North Americans play that 1H-1NT-2D-2NT-3H is forcing. That includes North Americans like myself who rebid 2D instead of 2H on minimal hands.
- hrothgar