Fouled boards

In the case that more than 3 Tables played a Fould Board, the following formula applies to score the board

As to bridge NZ, 

 

F = (M x E) + (E - A)
A

I found the following page online which shows a much easier way to calculate the score. 

When a board has been played 4 or more times in both the correct and the fouled condition it is scored in 2 groups

Group A: 5 Scores      8      6      4      2      0 available to allocate Table 1,2,3,8,9

Group B: 4 Scores              6      4      2      0 available to allocate Table 4,5,6,7

Allocate these as before

Fouled Scores
Brd 4 Dlr West All Vul
Tbl Contract &
Tricks Won
NS Score EW Score NS EW NS MPs EW MPs
1 3CE 10   130 1 9 4  A
2 3NTE 11   660 2 2 0  A
3 2NTE 8   120 3 4 6  A
4 3NTW 7   200 4 6 0  B
5 3NTE 9 600   5 8 6  B
6 6CE 11   100 6 1 3  B
7 5CE 10   100 7 3 3  B
8 3SN 9 140   8 5 8  A
9 3CE 11   150 9 7 2  A
CHECK SUM 32 32

All boards must be worth the same (72 matchpoints).

To every score, add one point for every score in the other group.

Put in the complements for the EW scores.

Check the total. It should come to 72.

Fouled Scores
Brd 4 Dlr West All Vul
Tbl Contract &
Tricks Won
NS Score EW Score NS EW NS MPs EW MPs
1 3CE 10   130 1 9 (4+4) 8 8
2 3NTE 11   660 2 2 (0+4) 4 12
3 2NTE 8   120 3 4 (6+4) 10 6
4 3NTW 7   200 4 6 (0+5) 5 11
5 3NTE 9 600   5 8 (6+5) 11 5
6 6CE 11   100 6 1 (3+5) 8 8
7 5CE 10   100 7 3 (3+5) 8 8
8 3SN 9 140   8 5 (8+4) 12 4
9 3CE 11   150 9 7 (2+4) 6 10
CHECK SUM 72 72

 

The results of the two methods are not the same, is the secound way of calculating accepted in NZ

 

Thanks,

Marion

Started by MARION ARLIDGE on 01 Nov 2020 at 12:19PM

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  1. NICK WHITTEN01 Nov 2020 at 05:33PM

     

    Hi Marion

    I think the two formulas are exactly equivalent (I did a quick check of a couple of the scores)
    Which means ipso facto it should acceptable

    I'm sure some maths teacher can provide a succinct proof!

    Your alternative formula certainly is easier
    Some time ago I had an occasion to manually matchpoint a fouled board and it was a nightmare
    The scoring program normally does it automatically; I can't remember why that couldn't be done on this occasion

    cheers
    Nick

  2. MARION ARLIDGE01 Nov 2020 at 06:10PM

    Thanks Nick, I am studying for the director exam on the 15th of November and the format has changed this year with 'scoring and movements' being a separate 90 minutes exam, just trying to make sure that I cover all eventualities. 

  3. GILES HANCOCK02 Nov 2020 at 12:10AM

     

    Hi Marion

    It's not the same as Neuberg, and I don't think it should be acceptable in NZ, especially when scoring software is available to do Neuberg.

    You can also do Neuberg in a spreadsheet easily enough.

     

    Good luck with your exams !

     

  4. NICK WHITTEN02 Nov 2020 at 08:09AM

    Is there a worked example using Neuberg available anywhere?

  5. GILES HANCOCK02 Nov 2020 at 08:36AM

    Hi Nick

     

    For this example I get :

    NS1 8.00
    NS2 0.80
    NS3 11.60
    NS4 1.25
    NS5 14.75
    NS6 8.00
    NS7 8.00
    NS8 15.20
    NS9 4.40

        

    Top is 16.00

     

     

  6. MARION ARLIDGE02 Nov 2020 at 08:54AM

    Hi Giles

    I didn't think the result was the same when I calculated it, such a shame as that system with just adding the number of the other group is so much easier than the formula.

    Where do you find a Neuberg spreadsheet 

  7. GILES HANCOCK02 Nov 2020 at 10:28AM

    Hi Marion

    I just did the spreadsheet myself in a few minutes.

    A B C D E
    1 4 36 40 8.00
    2 0 0 4 0.80
    3 6 54 58 11.60
    4 0 0 5 1.25
    5 6 54 59 14.75
    6 3 27 32 8.00
    7 3 27 32 8.00
    8 8 72 76 15.20
    9 2 18 22 4.40

     

    Column A = tables 1-9

    Column B = the manually assigned matchpoints within each group 

    Column C = column B times 9    =B1*9 etc             

    Column D =  =C1+4  same for rows 2,3,8,9    =C4+5   same for rows 5 and 6

    Column E =  =D1/5  same for rows 2,3,8,9      =D4/4   same for rows 5 and 6

     

    Hope that helps

    I hope this isn't in the CD exam, but if it is then NZB should allow you to use a spreadsheet.

     

     

  8. GILES HANCOCK02 Nov 2020 at 10:39AM

    oops, same for rows 5, 6 and 7

  9. MARION ARLIDGE02 Nov 2020 at 10:28PM

    Thanks so much Giles, I have my spreadsheet all ready to go, just in case it comes up

    Cheers,

    Marion

  10. GILES HANCOCK12 Jan 2021 at 12:46PM

    Congratulations Marion on passing the exam :)

     

  11. Kathryn Shannon10 Aug 2021 at 07:00AM

    Where I play,  Fouled Boards are "Skipped" at the table where fouled board was discovered and adjusted to 45% for the table where the board was fouled.   There does not seem to be any basis in the laws for this but it is considered to be "fair".

     

  12. GILES HANCOCK11 Aug 2021 at 01:02AM

    Hi Kathryn

     

    Please don't do this !   It allows players to be unethical - if they are getting a bad result then they just foul the board and get 45% instead.

    The result obtained before the fouling occurs needs to be kept (and a PP given).

     

    If the board is played only once in the fouled state then both innocent pairs should get 60% (or their session score if greater).

     

    - Giles

  13. Kathryn Shannon11 Aug 2021 at 06:32AM

    Hi Giles, 

    I am just a player, and have no influence on how games are run and ruled upon.  However I am aware of how unfair it is when I have a fouled board skipped meaning, through no fault of my own, I am deprived of a chance for a top board, which I assume the 60% intends to address.


    And likewise, my partner and I are disuccing how we can shuffle a few cards after I go down in another unmakable slam. (just joking). 

    Kathryn

  14. GILES HANCOCK11 Aug 2021 at 01:24PM

    OK, but have a talk to a club director or club President, and ask them to check with NZB.

    Dropping money on the floor works as a distraction to the other players :)   Then quickly switch North and West hands :)

    Giles

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