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All comments by Avon Wilsmore
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You are now ready to move on to Chien Hwa Wang's work:

http://www.amazon.com/Chien-Hwa-Wang/e/B001KDSFFI/ref=dp_byline_cont_book_1

Cheaper, too.
June 2, 2014
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Herr Junk is certainly taking the E-W matter seriously; here is his comprehensive site, unfortunately only in German:
http://karljunk.de/

If Gil thinks Donna Compton's site was “overkill” he is going to be searching for adjectives for this one…
May 31, 2014
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I see that the full deal is here:
http://nswba.com.au/tourn/2014/gnot/gndk31.pdf

Strange defence; N can return a spade after the heart ruff for a certain one down.

I like playing for clubs to be no worse than 4-2; two rounds of trumps and play on clubs. This will fail as the cards lie, so long as N has the wit to play a spade after ruffing the club.

And I am a little puzzled about the score; referring to the scoresheet shows 6 -1 and 6NT -1.

http://nswba.com.au/tourn/res.asp?yr=2014&dir=gnot&E=3&T=O&R=1&B=1

Note: much of the above is obsolete now that the article has been updated to reflect reality.
May 31, 2014
Avon Wilsmore edited this comment May 31, 2014
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Ron is quote right; Lukasz Slawinski and Stanislaw Ruminski (1970) were first on the scene with a comprehensive system incorporating 0-7 openings. I recall reading their system booklet in about 1981.

http://members.chello.nl/a.denbroeder4/REGRESsion/Home/regres.htm
May 30, 2014
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I believe the first international outing for the M2D was the Olympiad of 1972.

From http://www.chrisryall.net/bridge/weak.two/multi-2d.htm

An EBU Rules & Ethics committee meeting was held on 19 Dec 1974.

Item 3: Multi-coloured 2D opening bid

"In view of the numbers of applications received for the licencing of this bid, the fact that it is now widely played in international events and the amount of publicity which it has received, the committee decided on its own initiative to give it and “A” licence for a strictly limited period until the 31st December 1975. This was voted by a majority of 3 to one"
May 28, 2014
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A player in the Playoffs asks about the opponent's signalling during the play of the sixth board in the finals?

Wow. What would EOK have to say about that?
May 27, 2014
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I'm sure he looks very cute in pink…
May 26, 2014
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And when you are ready, here are many sets of hands to bid:
http://rpbridge.net/rpbp.htm

Under Bidding, here, are quizzes with detailed analysis:
http://rpbridge.net/rppc.htm

If you and your partner try them you will see if you are on the same page…

May 24, 2014
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An article that may be of interest:

http://www.australianbridge.com/article_39-5_raisingonthree.php
May 24, 2014
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Phillip Martin wrote an article about the late John Lowenthal:
https://sites.google.com/site/psmartinsite/Home/bridge-articles/remembering-john-lowenthal

Of Lowenthal, PM writes:
“He was a stickler for honest reporting. I once wrote up a hand he had misdeclared, identifying him simply as “my partner.” John chastised me for this. “You name me when I do something good,” he said, “so you have to name me when I blunder, as well.””
May 24, 2014
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On documenting a system:

1. There is a product called BbnOrganiser. The author says:

“BbnOrganiser is a program for processing a bridge bidding system. Its main features are:

- Edit the bidding calls and their meanings.
- Store the bidding system in a file obeying the Bridge Bidding Notation (BBN).
-Import BBN files in the current file.
-Generate an HTML file or an ASCII text file by exporting the bidding system.
-Compute probabilities of hand distributions.”

It is available here:
http://bbn.tistis.nl/

Documentation here:
http://bbn.tistis.nl/bbn_doc.htm

I have never used it so I do not know if it is good, bad or otherwise.

2. The BridgeBuff product has a “bid sequencer” feature described here:
http://www.bridgebuff.com/sequencer.html

On system:

You will find a lot of conventions and system agreements here:
http://rpbridge.net/rpsy.htm

and here:
http://ebookbrowsee.net/weak-notrump-system-kokish-kraft-jan-2008-doc-d364005619
May 23, 2014
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Deleted… in the light of new facts.
May 21, 2014
Avon Wilsmore edited this comment May 21, 2014
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In the late 70s it was commonplace to play, “If a pass is forcing, a double is for penalties”.

Unfashionable though it is, I have not progressed.
May 21, 2014
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So the deal provided is missing two big cards; J and 9.

Note to authors: Make every effort to provide accurate details.
May 20, 2014
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Yes, everyone bids, on the votes to date.

But the 4 bidders are forcing to game while (probably) needing to hold their black suit losers to one. Good luck.
May 19, 2014
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There are other points of view regarding the work of Bird and Anthias.

From Michael Rosenberg's In The Well session, 23 Aug 2013:

AW: “Do you have an opinion about the “anti-establishment” conclusions of Bird and Anthias on opening leads?”

MR: “Yes. A strong one. I think the idea that one can determine correct single-dummy play by using double-dummy analysis is just plain wrong.

I think doing this is not just useless, it's misleading.
The only simulations that could be relevant are ones which are done with single-dummy analysis. And there is almost nobody I would trust to do one of those (and it would take a LONG time).

Obviously, I can't prove any of this. But, to me, believing in this stuff is not “evidence-based” -even though that's exactly what its proponents claim. The “evidence” is a snare.

I could write a book about this subject. I'm not going to.

Meanwhile, I hope all my opponents, and none of my teammates, are believers in this….”


From Eric Rodwell's In The Well session, 26th Feb 2014:

AW: “Do you have an opinion about the conclusions reached by Bird and Anthias regarding opening leads, from their work with simulations?”

ER: “Hi Avon,

Avon calling! So I guess I'll answer. Those books were quite interesting.

The problem with using DD (Double Dummy) analysis is, suppose it goes 1NT-3NT and you have 53 Q943 A83 10843, the S5 is the best double dummy lead.

This is because:

1) Partner, playing DD, never misreads the lead as being from a 4+ card suit. He has A842, dummy J76, and he knows
that Declarer has 4 cards in Spades and not 2 and defends
correctly.

2) Declarer never missguesses any suit combination DD.
So, if the layout is dummy having xxx and Declarer
AKQ9, Declarer will, DD, play to the 9. And partner will
split with J10xx if it could help DD. So, unless entires
are a problem you aren't doing you side any damage,
DD, by leading the S5.

Same argument for Ace leads against suits. If you never missguess what to switch to, I'm sure leading an Ace will a lot better than it would in practice.

With these caveats in mind, I do think the books had a lot of useful insights.”
May 17, 2014
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He opens that hand with 1?

He needs to be given a chance to participate in a supervised duplicate.
May 15, 2014
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Kx x Kxx AKQ10xxx
is typical.

Bidding on is hyper-aggressive.
May 15, 2014
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