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Subject: Re: DIEP in WMCCC2000 London - long story

Author: Robert Hyatt

Date: 08:13:07 08/30/00

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On August 30, 2000 at 05:29:35, Uri Blass wrote:

>On August 30, 2000 at 05:20:51, Vincent Diepeveen wrote:
>
>>On August 29, 2000 at 19:03:52, Amir Ban wrote:
>>
>>>On August 29, 2000 at 13:26:36, Vincent Diepeveen wrote:
>>>
>>>
>>>>The whole pairing was changed because of AMIRs fear for SOP. Now the last
>>>>round SOS gets the world title for free, the rest simply doesn't
>>>>count.
>>>>
>>>
>>>Why don't you take your lunatic ramblings elsewhere ?
>>>
>>>Amir
>>
>>If you don't show them in world champs anymore sure.
>>
>>Note i'm not lunatic you are. You even protested against a free point
>>against Pacque expert because it *might* influence your SOP.
>
>
>
>If you are right about it then the protest did not help so
>I do not think that the pairing was changed because of Amir.
>
>Junior did not enjoy from playing better players.
>The opposite Junior suffered from it because it scored less points(it could only
>draw against tiger and by playing against xinix in the last round Junior could
>probably get a better place.
>
>Uri


I don't understand the pairing issue at all.  This is a mathematical process
that is finite and has rules to cover _every_ possible case.  It is just like
teaching someone to do long division.  The steps are cast in stone, there is
no room for varying at all.

Why can't the pairings at WMCCC events be done the same way?  There is no room
for "A really ought to play B".  It is either "A must play B here" or "A must
play somebody else and B must play somebody else here."

I learned to follow a simple recipe of instructions 45 years ago.  It isn't
hard.  Or is it?  Based on some pairings over the past few years, you would
assume there is great flexibility in who plays who in each round.  I have
run many tournaments (human) and there is zero flexibility.  _if_ the pairing
rules are followed to the letter.

The only flexibility is in which 'system' you will use.  IE if you have three
players with a score of 4/5, what do you do?  (a) bring up the highest rated
player in the next-lowest pool to fill this group out to 4?  (b) pair the top
two players in this group and pair the third with the highest seed in the next
lower group?  (c) drop the lowest player in this 4.0 group down into the next
group?  etc..

There are options, but they are to be chosen _before_ the first round is paired,
and then the same rules are to be used for the entire tournament.  Somehow this
doesn't get done at WMCCC events.  At least not since Mike Valvo stopped
directing them.



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