I need data/analysis
#1
Posted 2011-April-22, 06:45
I was asked to write an article in our local newsletter about preempts, with the two people asking me to do this proposing a principle as clearly right, and yet I do not necessarily agree with it. The example hand was one that was given to me.
Comments about the proposed hand in 2nd or 3rd seat if you are willing; the poll only allows so much.
-P.J. Painter.
#2
Posted 2011-April-22, 06:51
Conclusion:
* Red vs white I'd open 3♣ (promising 2 top honors)
* Equal vulnerability partner will expect a bit less shape so I would open 1♣.
* White on red our goal is to pressurize the opponents and I open 5♣.
You will get a lot of different opinions on this, though.
#3
Posted 2011-April-22, 07:02
In second seat, I'm leery about any preempt
1. I have a void
2. I have a 4 card major
3. I have a lot of playing strength
I prefer a 1♣ opening to a preempt at equal vulnerability.
White on red, I might very well open 5♣
Red versus white, 3♣ is reasonable but I lean towards pass
Note: I'm not sure that I would actually open 1♣. I am torn about the relative merits of pass versus 1♣.
I prefer reasonably sound openings playing 2/1 and might very well pass.
In third seat, we're looking at a whole different ball game
White on Red, 5♣ seems best, though 1NT (or even 2NT) has strong appeal as well
Equal vulnerability, I'm torn between 4♣ and 5♣
Red versus white, I'd definitely preempt 4♣
#4
Posted 2011-April-22, 07:43
#5
Posted 2011-April-22, 08:10
#6
Posted 2011-April-22, 08:14
George Carlin
#7
Posted 2011-April-22, 08:20
#8
Posted 2011-April-22, 08:25
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
#9
Posted 2011-April-22, 09:39
-P.J. Painter.
#10
Posted 2011-April-22, 09:45
gwnn, on 2011-April-22, 08:14, said:
+1
Winner - BBO Challenge bracket #6 - February, 2017.
#11
Posted 2011-April-22, 10:34
#12
Posted 2011-April-22, 10:40
If they want you to emphasize that you can't preempt with a 4 card major maybe you should try to counter with some rule of 20 here ;P especially if they want to convince others that pass is right.
East4Evil ♥ sohcahtoa 4ever!!!!!1
#13
Posted 2011-April-22, 13:07
The presence or absence of a 4-card major is only one factor
-
xxxx
xx
AQ9xxxx
is a pre-empt
-
KQ10x
xx
xxxxxxx
is obviously a pass
I would also pass on
-
QJxx
xx
Axxxxxx
this is the type of 4-card major hand not to pre-empt on, because it's very suitable for play in hearts, has a lot of defence, and is not particularly suitable for play in clubs (in context)
#14
Posted 2011-April-22, 22:16
I am sure we can make a whole new topic about what to rebid if pd response 1♥ when we open 1♣ (i think actually there was something close to this)
"It's only when a mosquito lands on your testicles that you realize there is always a way to solve problems without using violence!"
"Well to be perfectly honest, in my humble opinion, of course without offending anyone who thinks differently from my point of view, but also by looking into this matter in a different perspective and without being condemning of one's view's and by trying to make it objectified, and by considering each and every one's valid opinion, I honestly believe that I completely forgot what I was going to say."
#15
Posted 2011-April-23, 00:33
I did a 1000 hand single dummy simulation using GIB.
The 1000 hands had six spades and four hearts and 6-9 hcp.
I forced GIB to open each hand 2S and compared the result with forcing GIB to pass.
On average at every vulnerability in first seat opening 2S outscored passing at IMPs.
I repeated the experiment with the hearts and spades reversed. Again at every vulnerability 2H outscored pass.
I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon
#16
Posted 2011-April-23, 00:53
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
#17
Posted 2011-April-23, 21:22
My experience has been that a 4-4 heart fit (should it exist) as trumps is usually a trap with 7-4 hands. A 4-1 trump break is not 2 to 1, but more like 50+%. The taps become a nightmare, and the non-solid 7 bagger becomes useless. All this tells me that a preempt is the better bet, esp. since my ♥ holding is offensive, not defensive. Replace the ♥ QJ with the K, and the hand starts to look like an opening bid.
#18
Posted 2011-April-23, 21:39
jdeegan, on 2011-April-23, 21:22, said:
Wrong, the odds of a 4-1 trump break are completely unaffected by the shape of your own hand.
#19
Posted 2011-April-24, 18:51
655321, on 2011-April-23, 21:39, said:
You are correct, sir. I was getting ahead of myself. One has to wait to see if and what the opponents bid. My 'experience' consisted of remembering contested auctions where at least one of the opponents also had a long suit, and the bidding got interesting. Suit split odds only change when vacant spaces in the opponents' hands can be factored in.
All this assumes random dealing, of course. A goulash dealing method changes everything.
#20
Posted 2011-April-24, 21:39
- Seats 1 & 2, Vul: 3♣ = 10, 1♣ = 9, _P = 5.
- Seats 1 & 2, Nonvul: 1♣ = 10, 5♣ = 8, 4♣ = 7, 3♣ = 5, P = 4.
- Seat 3: 3♣ = 10, 1♣ = 4, P = 2.
- Seat 4: 3♣ =10, P = 9.