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first25plus5
16-04-2015, 10:10 AM
I'm thinking it will be interesting to see how the Vega pairing system reacts (or otherwise) in this seven round event with 26 players where four players have taken a bye in the first round.
Of interest is the effect (if any) of the byes regarding the average rating of opponents etc (ARO) and what will be happening in how Vega pairs the players.
I'm sure a Vega-master will know more on this.

Anyway all the best to the contestants and the arbiter. I'm sure the event will run well. Cheers.

Keong Ang
18-04-2015, 10:03 AM
I'm thinking it will be interesting to see how the Vega pairing system reacts (or otherwise) in this seven round event with 26 players where four players have taken a bye in the first round.
Of interest is the effect (if any) of the byes regarding the average rating of opponents etc (ARO) and what will be happening in how Vega pairs the players.
I'm sure a Vega-master will know more on this.

Anyway all the best to the contestants and the arbiter. I'm sure the event will run well. Cheers.
Seems to be no problem for Vega. All Dubov pairings seem to be generated easily.
As long as the pairings are legal and according to the rules I'm satisfied.

Don't think there is a Vega-master around, unless you actually mean Vega is the master!
I just serve Vega results and then carry out it's instructions. ;)

Garvinator
19-04-2015, 12:37 AM
Seems to be no problem for Vega. All Dubov pairings seem to be generated easily.
As long as the pairings are legal and according to the rules I'm satisfied.

Don't think there is a Vega-master around, unless you actually mean Vega is the master!
I just serve Vega results and then carry out it's instructions. ;)
I think this is a rather risky policy. The chief arbiter should be able to justify how the pairings were made in case the pairings are questioned. Also, what happens if the computer being used dies at an unfortunate time and you have to manual pair. If you do not understand the pairing system, you are in trouble.

I believe any internationally titled arbiter should be able to offer more of an explanation than- oh that is how the computer did it.

Keong Ang
19-04-2015, 08:56 AM
I think this is a rather risky policy. The chief arbiter should be able to justify how the pairings were made in case the pairings are questioned. Also, what happens if the computer being used dies at an unfortunate time and you have to manual pair. If you do not understand the pairing system, you are in trouble.

I believe any internationally titled arbiter should be able to offer more of an explanation than- oh that is how the computer did it.
Of course an arbiter (not just the chief) must be able to explain how the pairing came about.
My point is that when the pairings are legal and according to the rules, it is one thing less for the arbiter to worry about.

Most of the time the debate is about whether the pairings are "appropriate" instead of in accordance with the rules (i.e. correct). During a tournament, the arbiter's duty is to ensure the rules are followed strictly and not to question them.
Changing computer generated pairings by FIDE approved programs that are in accordance with the rules expose the arbiter to accusations of bias. There will always be complaints about the appropriateness of pairings and it is none of the arbiters business to accommodate these complaints if the pairings are correct.

Vega had always generated correct Dubov swiss pairings for me but players usually have other pairings they would prefer!
Sometimes it is much easier to say "oh that is how the computer did it" than to explain the pairings for the umpteenth time to a player that you know is complaining because they perceive the pairings as having disadvantaged them or advantaged their rival. ;)

Kevin Bonham
20-04-2015, 11:58 AM
Also, what happens if the computer being used dies at an unfortunate time and you have to manual pair.

Or for that matter is stolen. Really the most critical thing is that the arbiter should always have alternative records of the draw (paper trail, posting on Chesschat etc) that enable the arbiter to rapidly redo the draw on a different computer if required. It is often easier to obtain another computer than to remember lost data. An arbiter with a backup trail can usually find a replacement computer faster than they can manual pair for a large event, while an arbiter without a backup trail is in trouble even if they can do manual pairings faster.

Garvinator
20-04-2015, 01:09 PM
Or for that matter is stolen.Like that would ever happen :P

heligan
20-04-2015, 02:12 PM
The pairings are printed out; Vega generates results slips which are printed out and handed back signed and filled in. Most events would have at least a few people staying nearby with alternative computers. The www stuff from Vega is online (and for some tournaments, the other material is also backed up online during the event). If the computer failed at the Devonport venue then no doubt I would be sent home (across the road) to fetch mine. If the printer was stolen and the spare printer blew up, wifi failed, a mini-tornado swept away all the paper trail, and the electricity went out, then OK we might have to resort to manual pairings - assuming the venue was still standing and candles were available...
Perhaps not totally a joke, since I have played at events in NZ where the chief arbiter announced the procedure to follow should there be a major earthquake during the round!

Craig_Hall
20-04-2015, 09:21 PM
The pairings are printed out; Vega generates results slips which are printed out and handed back signed and filled in. Most events would have at least a few people staying nearby with alternative computers. The www stuff from Vega is online (and for some tournaments, the other material is also backed up online during the event). If the computer failed at the Devonport venue then no doubt I would be sent home (across the road) to fetch mine. If the printer was stolen and the spare printer blew up, wifi failed, a mini-tornado swept away all the paper trail, and the electricity went out, then OK we might have to resort to manual pairings - assuming the venue was still standing and candles were available...
Perhaps not totally a joke, since I have played at events in NZ where the chief arbiter announced the procedure to follow should there be a major earthquake during the round!

Can't be too careful, especially in Christchurch...

Keong Ang
21-04-2015, 03:33 PM
Can't be too careful, especially in Christchurch...
Or anywhere in our disaster prone country!
I think we generally over prepare to the level where everyone would have more important things on their mind than a chess tournament. More than half the participants may have already quit the tournament before we're close to running out of back up contingencies for computerised pairings...

ER
21-04-2015, 07:52 PM
Or anywhere in our disaster prone country!
...

Or even road accidents like before the start of the most recent Queenstown Classic!

Keong Ang
24-04-2015, 09:42 AM
Or even road accidents like before the start of the most recent Queenstown Classic!

Since then we take steps to ensure we avoid "all eggs in one basket" type situations when transporting equipment.
Pity that it is not really practical with people due to shortage of personnel. Can't split a person! :lol: