Join Bridge Winners
All comments by Nicolas Hammond
You are ignoring the author of this comment. Click to temporarily show the comment.
There's more explanation on page 16 of https://cdn.acbl.org/nabc/2019/02/bulletins/db2.pdf
Oct. 1, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
Why are Mitch Dunitz and Barbara Heller listed as Executive Producers?

See https://www.youtube.com/watch?v=hs_10C9p-FQ

Was this a requirement from the ACBL Education Foundation?
Oct. 1, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
I published some statistics at http://www.detectingcheatinginbridge.com/statistics.html. Once the contract was set, Cecelia played fewer “wrong” cards as declarer than any of her competitors (with a minimum number of boards required).
Oct. 1, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
You need to leave s apace after “hand:”. This is the URL:
http://db.worldbridge.org/Repository/tourn/wuhan.19/microSite/Asp/BoardAcrossKO.asp?qboard=027.06.FF.1644&qphase=FF
Sept. 30, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
I did a Google search for ACBL and “Kids Table”. It found some entries at acbl.org.

If you go to http://bridgefeed.acbl.org there is a search option. Type in “Kids Table”. The URL ends up as https://bridgefeed.acbl.org/?s=Kids+Table

It listed four separate stories: “Movie is a hit”, “Film to premier”, “Screen team”, “Jackets required” going back 18 months. I had said that it would not be a surprise that you could not find anything on the ACBL web site because this is an Education Foundation project, not an ACBL project. However there are at least four different stories on an ACBL web site.

The ACBL By-Laws state that one of its purposes is, “To develop, promote and support programs that encourage participation n the game of bridge” I believe that listing this movie on four separate occasions over 18 months certainly does that.
Sept. 30, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
The ACBL and the ACBL Education Foundation are two different entities. No surprise that you would not find anything on the ACBL web site.
Sept. 29, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
@Tom: One might think so, but such actions may be too obvious and also detected. I don't disclose the methods I use to detect cheating so that players don't try and work around them.

I've updated the data at http://www.detectingcheatinginbridge.com/statistics.html to include all data after the finals. For some reason BBO does not yet have segment 6 of the finals so that is not included.

I have also included the declarer ratings for the top players.

Again this is the double dummy values. Not necessarily the best measurement of declarer skill but one that it easily understood. As you can see, ignoring the opening lead, defenders make fewer mistakes than declarers. Single dummy declaring is very different than double dummy declaring.

For those that have read my book, I added the MF values for the events as well. If you haven't read the book, see http://www.detectingcheatinginbridge.com/selections.html and look at the selection from Chapter 13 for a comparison of MF values from top tournaments and what happens when cheating players are removed from the data.

Put simply, a high MF value is better bridge, low MF values indicate cheating. The book shows how ACBL masterpoint ranges correlate to MF values. The more MPs you have, the higher your MF values when playing against peers. 11,000,000 records from ACBL to validate the concept/data.

There was a huge jump in MF values for top tournaments after the summer of 2015. I have no idea why….

Care to guess how this WBF 2019 compares to WBF 2015? Answers are on the site.
Sept. 28, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
Fair to say they are all Multi-talented. Bridge players, film makers, actors. In Stefanie's case, seriously Multi-talented: https://www.tvovermind.com/stefanie-woodburn/

(I did search for the other players but nothing much came up on them).
Sept. 28, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
Looks like Stefanie has been doing other things for the past year: https://twitter.com/StefWoodburn and https://www.youtube.com/watch?v=I–NHnBDjPU
Not many people will have those two activities on their resume…
Sept. 28, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
There are two ladies. Stefanie Woodburn and Monique Thomas.

See https://bridgefeed.acbl.org/movie-is-a-hit/ for a picture.
Sept. 28, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
It's a little confusing with terminology. The ACBL Education Foundation pages and ACBL say they “support” the movie. The WBF at http://youth.worldbridge.org/the-kids-table-world-premier/ states that the ACBL Education Foundation financed it.

“The group’s teachers, Brian Reynolds and Samantha MacDouglas, try to keep an emphasis on making sure their students are having fun, but they recognize it doesn’t always work. “Bridge isn’t for everyone,” MacDouglas says. But in order for it to be for anyone, they have to be aware it exists. The movie aims to create an awareness of bridge in an audience the ACBL badly wants to reach. That’s why it was financed by the ACBL Educational Foundation.”

Edit: corrected first line from ACBL to ACBL Education Foundation.
Sept. 27, 2019
Nicolas Hammond edited this comment Sept. 28, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
See https://bridgefeed.acbl.org/screen-team/

“the ACBL Educational Foundation is supporting the project”
Sept. 27, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
See https://bridgekidsdoc.com/
Sept. 27, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
I've updated http://www.detectingcheatinginbridge.com/statistics.html to include all data after Day 1 of the finals. For some reason BBO does not yet have segment 3 of the finals so that is not included.
Sept. 27, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
They are a lot of fun. They brought a lot of energy to the events they played in. They entered some of the NABC+ events, including 2017 Reisinger.

The movie was sponsored by the ACBL Education Foundation. See https://www.acbleducationalfoundation.org/page/news-5/news/the-kids-table-movie-gets-cheery-reception-2.html

We must remember that this is their film of what they saw.
Sept. 27, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
Here's the movie trailer: https://www.youtube.com/watch?v=hs_10C9p-FQ
Sept. 27, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
After the opening lead, the statistics show the accuracy of the card played against double dummy. Any card that gives up a trick (double dummy) is a “bad” card, anything else is a “good” card. Percentages shown are good / (good + bad).

(1) “effective on defense” See above.
(2) “what counts as a mistake” See above.
(3) “who made mistake” Cannot determine. We know who played the card, but partner may have failed to signal properly.
(4) “difficulty of deal” All deals are treated the same.
(5) “ ”ineffectiveness in the auction". Not really. This statistic measures defensive ‘mistakes’. Separately I calculate (but haven't published) declarer ‘mistakes’. Declarers make more mistakes (ignoring the opening lead) than defenders.

The Law of Large Numbers should apply given sufficient number of cards played.

I fully understand that Bridge is a single dummy game and that these statistics are based on double dummy results.

Top players average in the 97.0%-98.0% range for played cards after the opening lead.

For the opening lead, the average (for an accurate lead) is ~ 81%.

I have the opening lead data (+ lots of other data) but don't show it on the web site. There are too few boards for opening lead comparisons to make meaningful sense.

The data is objective; the decisions on which statistics to show is subjective.

If there is some data you would like to see displayed, let me know and I'll see if I have it or can easily create it.
Sept. 27, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
@David. You can scientifically break down Bridge into four categories: bidding, opening lead, defensive play, declarer play. You can further break down bidding into competitive and non-competitive auctions if needed. Butlers cover all four categories. The statistics I have published are just on the defense after the opening lead.

A problem with Butler is that it reflects who you played against. As an example, Morocco did very badly. If you were sitting out when your country played Morocco, your teammates would see their Butler scores increase.

The statistics I have published are objective data based on the pair's and player's performance. They are not a subjective opinion.

I do have separate stats on both bidding and opening leads but haven't published them.

The stats I have published only reflect one of the four categories in Bridge. But they are more reflective on how well the partnership did ignoring who their opponents were.
Sept. 26, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
@Louis. Thanks. It is Bob not Bas. My mistake.
Data normalization is one of the hardest problems with BBO data. The BBO records listed “B Drijver”. I have to manually type in the mappings from BBO names to real names. There were 24 team, 6 players, 4 divisions, over 500 names to correct. I didn't do all of them, and got this one wrong. (There were a couple of others that were wrong that were privately caught earlier in the week). I had incorrectly entered Bas not Bob for “B Drijver”.
Sept. 26, 2019
You are ignoring the author of this comment. Click to temporarily show the comment.
For those interested, I have been updating http://www.detectingcheatinginbridge.com/statistics.html after each day of play.
Sept. 25, 2019
.

Bottom Home Top