[lycier]

At first, I want ask everyone a question.
How many people undertand Gib CC really and play so well?
My conclusion is it is not too many, most people can't understand Gib CC.
Here I will offer my evidence at below.

See my hand traveller :




Now I want to make analysis one hand by one hand, see what the truth is.

- Hand-1

---

Problem :
1- This hand is not strong enough to open 2♣, it would better open 1♥.
2- 5♠=? It is ♠K+♥Q on Gib CC, why lie?

- Hand-2, it's my hand, I think this is a standard bidding sequence.

---

- Hand-3

---

Problem:
South human don't know how to play Drury.

- Hand-4

---

Problem:1- South human don't know how to play Drury.2- The explanation of 1nt is " Forcing one notrumph", obviously it is a issue of Gib CC.
- Hand-5

---

Problem:South human don't know how to play Drury.
- Hand-6

---

Problem:
Personally I think it would better play 2♣ drury, 3♥ as a limited raise would be not good CC. Please ask Fred to think this issue over. If me, I would better play 3♥ as a preemptive bid.


- Hand-7

---

Problem:
South human don't know how to play Drury.
- Hand-8

---

Problem:
It's same as Hand-6


-Hand-9

---

Problem:South human don't know how to play Drury.


-Hand-10

---

Problem
North would better 1♥ with the hand of 5422 shapes.


Hand-11

---

Problem:
South human don't know how to play Drury.
-Hand-12

---

Problem:
South human don't know how to play Drury.
-Hand-13

---

- Hand-14

---

Problem:
1- South human don't know how to play Drury.
2- A suspicious buggish definition of pass bid : pass says " Third hand opener passes --- 5+♥, 11+hcp, 12-14 TPs", it is first time for me to see the definition on pass bid.

- Hand-15

---

Problem:South human don't know how to play Drury.

- Hand-16

---

Problem:
South human don't know how to play Drury.

Now you would see most people are not good at Gib CC.

[johnu]

lycier, on 2016-May-16, 04:11, said:

South human don't know how to play Drury.

Most players who rent GIBs are either beginners or "intermediates". They don't know how to play a lot of things. If they advance in their abilities, maybe they'll learn about Drury.

lycier, on 2016-May-16, 04:11, said:

Now you would see most people are not good at Gib CC.

Self-rated beginners and intermediates have not mastered the basics of bridge. I don't know why you would expect them to have mastered the GIB CC.

[lycier]

Many people who claim to be an expert often can't get good scoring in the bbo tournaments, in fact many of them don't play Drury.
So-called experts don't show they have mastered the Gib CC.

[johnu]

lycier, on 2016-May-16, 15:50, said:

Many people who claim to be an expert often can't get good scoring in the bbo tournaments, in fact many of them don't play Drury.
So-called experts don't show they have mastered the Gib CC.

Most of the players you listed are beginners or intermediates (or listed as private who may be beginner up to world class). And even if someone self-rates as advanced, expert, or world class, that barely correlates with what real world experts would rate most of them.

As for the success of using Drury, how do you like playing 6♥ on the lead of a spade through your AQ? Would you still be singing the praises of Drury if you were -1 for -13 IMPs?

[lycier]

If I and my partner have seen hands others hold, I believe I would be a world champion.
The bridge is not a science, only probability.
The players listed by me are at random, however I have no ability to confirm what skill they have.

I would prefer discussing , don't know why you like to do authentication so much.

[johnu]

lycier, on 2016-May-16, 16:31, said:

If I and my partner have seen hands others hold, I believe I would be a world champion.
The bridge is not a science, only probability.

Only if you analyze the other hands better than this one

lycier, on 2016-May-16, 16:31, said:

The players listed by me are at random, however I have no ability to confirm what skill they have.

That's pretty much nonsense. Almost nobody downgrades their self-rating. When somebody self-rates as beginner or intermediate, you can give long odds that none of them are world class, let alone expert or advanced. Some may believe that they are better than the rating label that accurately reflects their level of play, others rate themselves as expert or world class knowing it is a lie so they can get invited to better tables. Is that so hard to understand?

So, somebody self-rates themselves as world class. It shouldn't take looking at more than 10-12 hands to see if the rating should be beginner or intermediate, especially when you have such good double dummy abilities.

[manudude03]

This topic brings up a real pet peeve of mine: web pages taking too long to load. Every one of those hand diagrams individually needs to be loaded in from another web page, so putting 16 of them up makes it take ages. As for player ratings, johnu is right, the average player is beginner or low intermediate, despite what their profiles say. I wouldn't even give them 12 boards, you could usually tell within the first board they have things to do how good they are.

[lycier]

What is self-rating?
What is expert/beginner/intermediate?
Who really care those?
Clever BBO never make it.
I know many chinese experts including national champion, their self-rating is often beginner,even novice.The motto we believe in is modesty is a virtue.
I'm a beginner, you all are experts, is it of pretty importance?
It very known to all most of people are beginners/intermediates,do these have any significance?
Of importance, I love this game ! just like USA NBA slogan ! Discussing with each other, sharing with happy experiences.

I am a beginner, I am willing to challenge any so-called experts at BBO including on this forum.

Always learn from experts ! Always learning.

[Vampyr]

People should be able to play the GIB convention card. They can just print it out.

[cloa513]

South's hand is not a drury raise short by 1 HCP. Hand 16 gave the right response- a mixed raise basically. GIB did some underbidding. There is good reason to psyche a K of spades- helps you make a contract that is otherwise unmakeable- aggressive experts do it all the time to mislead the defence into a bad lead or bad play.

[johnu]

lycier, on 2016-May-16, 22:39, said:

I know many chinese experts including national champion, their self-rating is often beginner,even novice.The motto we believe in is modesty is a virtue.

Are you saying the Chinese national champion self rates as a beginner and doesn't know how Drury
works? Assuming they do, that proves my point. "Real" experts should know about Drury.

And if experts from China do downgrade their rating, that's probably the only country where that happens with any measurable frequency.

[johnu]

Vampyr, on 2016-May-17, 01:47, said:

People should be able to play the GIB convention card. They can just print it out.

Or just move the cursor over the possible next bids and read the descriptions that BBO provides.

[johnu]

lycier, on 2016-May-16, 22:39, said:

I'm a beginner, you all are experts, is it of pretty importance?

If you are a beginner, why do you self rate as an intermediate?

[cloa513]

johnu, on 2016-May-17, 11:25, said:

Are you saying the Chinese national champion self rates as a beginner and doesn't know how Drury
works? Assuming they do, that proves my point. "Real" experts should know about Drury.

And if experts from China do downgrade their rating, that's probably the only country where that happens with any measurable frequency.

More like its easier to exceed expectations if you set them very low.

[mycroft]

I know that whenever I get a Drury hand, or a "interfere over their 1NT" hand, I'm headed for a good score, because there will be several in a 3-1 fit or much too high (or both). Oh well. BBO tries to make it as easy as possible to see what bids mean that are made and what your bids would mean. It's not intuitive, but it's there - and if people won't read it, I'll take my plus.

But I wouldn't say "most". I'd say "enough".