Gran Torneo Abierto de Ajedrez Mexicano Ciudad de Morelia

Morelia Mexican Open

Morelia, Mexico, 2006.02.16-19

Pairings - El Pareo - Primera Fuerza - Open Section
Ronda 2   Ronda 3   Ronda 4   Ronda 5   Ronda 6   Ronda 7  

II - abajo de 2000 - Segunda Fuerza
Pairings - El Pareo: Ronda 6

A Few PGN Games

Resultados - Crosstables

Sorry for the delay in posting the results. The program used for pairing was Petunia - Swiss 46 - Swiss 51 (for which Open Section arbiter Oscar Ruiz is a license holder). Swiss-46 reportedly is absolutely standard in Mexico, but it does have a few drawbacks. First, I remember that moving a player from one section to another requires deleting from one section and entering by hand in the other. That was a headache when correcting the registrations in the hours before the first round. Second, it does not seem to produce the kind of tournament crosstables that people in North America are accustomed to. So I wrote a program in PowerBASIC to combine certain columns from the "Rating Report" with certain columns from the "Ranking & Games", and then renumber the opponents in finish order.

Having no prior experience with Petunia, I did not do any pairings. Hugo Arroyo and Oscar Ruiz, assisted by the other section arbiters Adrian Bocanegra, Daniel Espindola, and Tizoc Haro did an outstanding and amazingly accurate job. The pairings produced by the program were not fiddled with. However, looking at the crosstables, I see many players with rating 0000 playing in Sections 2 to 4. According to my reading of the Convocatoria, unrated players were allowed in sections 1 or 5 only. I made that clear to my associates, but I am not sure if the message got through. Perhaps it was another case of "it says this, but it really means that." The co-winner of Section 3, NAJERA CASTILLO SERGIO (MOR) is shown in the pairing files as unrated, but he actually does have a FENAMAC rating of 1741, so he was in the right group. However, I was not able to find ratings for all players noted as 0000.

I'd like especially to thank Enrique Zaragoza, who also did no pairings (for both of us, this was a new experience), which allowed us time to deal with other matters.

This page is also http://www.tinyurl.com/cymdf
cym is the first three letters of Wales in its own language, and DF is a common synonym for Mexico City. More precisely, it is Distrito Federal. If this interests you, there are billions of pages on the internet which will also.

URL: This web page is:   http://www.islandnet.com/~jberry/mor.htm    Last modified February 25, 2006