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Change in the WBF Victory Points Scales

Posted on 10 September 2012

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A Scoring Committee was set up by the WBF President in January of this year. The committee was chaired by Ernesto d’Orsi of Brazil and co-chaired by Max Bavin (UK). Other Committee members are Henry Bethe (USA), Bart Bramley (USA), Peter Buchen (Aus), and Maurizio Di Sacco (IT). After deep and long analysis, the committee proposed – and the WBF Executive Committee accepted – the following:

1. The adoption of a 20-point victory point scale with the following features:
• The scales are continuous and given to two decimal places
• Subject to a cap, each IMP margin translates to a specific VP award
• Each additional IMP in the winner’s margin is worth no more than the previous one
• Relative to the current WBF scales, the “blitz” margins in the new scale will be approximately equivalent to the 25-2 in the old scales. There is no reduction of VPs for the loser when the margin exceeds the blitz margin.

2. It is recommended that the new scales be used in the next World Bridge Championship (including Youth tournaments) and be available to all NBOs by the end of 2012.

3. Also, the Committee will prepare new “discrete” scales (whole numbers) to be used by NBOs if they wish to during the transition from the old to the new VP scales.

 4. On the World Bridge Federation website (www.worldbridge.org), the Committee will publish the “continuous” and “discrete” scales for the most-used number of boards per match and will publish them together with instructions on how to determine VP scales for other sizes of matches. Also on the website, using the actual algorithm, users will be able to enter the number of boards and the preferred scale type to read, print or download the result.

5. Future work by the Committee will include consideration of aggregate score, the IMP scale and matchpoint scoring, although not necessarily with a view to suggest changes.

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September 10, 2012

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One Response to “Change in the WBF Victory Points Scales”

  1. Paolo Enrico Garrisi says:

    Well done. The matter of Victory Point Scale was treated in May 2010 Bridge World issue right by Bart Bramley, now in the Committee. I reported it, on Neapolitan Club, in an article about the famous magazine; here’s what written by Bramley, and my comment (my article was in humorous register):

    …On page three there’s Bart Bramley on a long article about 2009 Bermuda Bowl. It’s in two parts: in this number until the semifinals; in June, in the second part, he’ll talk about the final Italia – Usa. In his article, Bramley makes a digression on the Victory-Point Scale that is used since twenty years by the WBF (World Bridge Federation): the transformation from imps to VP hasn’t the duly balance. He complaints that “…You’re better of winning one match by 25 and losing the next by 5 than winning both matches by 10. Can this be right?”
    Moment, please: let me count. In the former case, +25 and -5 imps, the overall result will be 35-25 VP; in the latter (both +10), I have a worse result: 34-26. This cannot be right: two winnings by 10 say that my team is strong; one winning by 25 and one losing by -5 say that my team is only strong against weakies. I must immediately write to Mr. José Damiani, President of WBF, signalling the mistake…

    read full article:
    http://neapolitanclub.altervista.org/eng/in-the-last-number-of-bridge-world-i-have-red-that%E2%80%A6.html


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