[luis]

This was posted to RGB and I found it amazing.

Not vul vrs vul
pass - pass
You have:
AT9xx, x, Axxxx, xx
what do you bid?

If you guess what I would have bid you can win something :-)

[hrothgar]

Looks like an easy 3S bid to me
I'll run to 4C if I get doubled

[flytoox]

I would simply bid 1s. Opp is unlikely have slam, given my two aces. Opp hopefully have a game in heart. If you phyic 3h, and dbled, u will run, then they will find out it. So i think 1s may work well.

[pbleighton]

In the first or second seat, playing with my regular partner, I would open this 1S (pickup partner = Pass).

In the third seat, too many losers for game. When I read the post at first, I thought 2S. I think Richard may be right, however. So:

At the table, 2S. In this post, 3S. ;D

[lifemonster]

2S, piece of cake.

The color is in fav of preempt, but you gotta draw a line somewhere. Don't overdo it.

[inquiry]

1S

[Antoine Fourrière]

2S, purely based on distribution. I want partner to raise to three with three cards and to four with four cards. I'll bid 3D if possible. What is there about vulnerability that says that I should do something outlandish? It may still be our hand.

[Free]

Can we still win something?? I'd bid 1NT (psychic). If partner bids 2D (transfer H) I pass, I he bids 2H I'll bid 3S...

[mishovnbg]

2HE weak 2 - not mistake ;D. Hope my p know modern style and dont raise my preempt after he passed .
By the way i already had same board at tournament. I opened 2SP weak with singleton from 3th pos no vul, LHO dbl and my p raise to 3SP... I already expect i receive deserved zero, but RHO continue with side suit. Final contract was slam from opps. I lead SP, p take A, return another SP and I ruff for -1. Good result of course. My p had 7 cards FIT in SP, may be it was lowest raise in bridge history with same fit :.
Misho

[EricK]

I did a little experiment with this hand. Using the bridge program Jack (v2.02), I set it up so that South and West had passes and North had the given hand, then I dealt 9 hands and saw how the bidding might go with each of four bids by North (Pass, 1S, 2S or 3S). I didn't try either of the psyches suggested (1NT or 2H) because there would be too many judgement calls in the bidding.

If North started with a pass, I assumed he would come in at the two level (if it looked right) but not the three level. For South, I assumed that he would assume a 5 card suit for a 2S pre-empt, and a 6 card suit for a 3S pre-empt. I let Jack bid the East/West hands to simulate playing against a reasonable, but not expert, pair.

The raw scores were as follows (all scores are double dummy results).


Pass  1S   2S   3S
-620  -620  -620  -620
+100  -140  -50  -100
+110  +110  -110  -150
+420  +420  +420  +420
+140  +140  -50  -50
-660  -620/-500  -600  -600
-130  +140  +140  +500
+100  +140  -50  -50
-650  -650  -650  -200

The choice in row 6 is because I genuinely couldn't decide whether North would sacrifice over 4H.

I realise 9 hands is not a very large sample, but this sort of experiment takes a while per hand!

Now I have these results, I am not entirely sure what, if anything, they show! Assuming this is a representative sample, what does the data suggest?

Eric

[Codo]

Hi Eric,

IF this data had been representative, ithad shown, that in this particular hand 3 Spade is a clear winner, followed by 1 Spade and that the worst bid is 2 Spade...

Kind Regards

Roland

[EricK]

Quote

Hi Eric,

IF this data had been representative, ithad shown, that in this particular hand 3 Spade is a clear winner, followed by 1 Spade and that the worst bid is 2 Spade...

Kind Regards

Roland

What about "Pass"?

Have you calculated using absolute scores, or IMPs, or what?

Eric