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bobby1992
27-01-2004, 08:12 PM
could some one please tell us if a player is unrated by acf but is new to australia and has and elo is an fm ,plays in a local tournament do his opponets get their australian ratings affected in any way,say if he has only played 6 games against rated players here.thanks

Bill Gletsos
27-01-2004, 10:24 PM
He should have informed the organiser he was elo rated.
If he did the organiser should inform the state rating officer so that he can inofrm the ACF rating officer.

Whats this FM's name and FIDE rating.

bobby1972
28-01-2004, 08:42 AM
hi bill its ascaro here this bobby1992 is me aslo but because i am on a different computer all the time at work it did not let me use bobby1972 .ok
hes name is Abdul Wahab, A. Rasheed fide 2296 from iraq he played in the mcc australia day open .thanks for the reply.

bobby1972
30-01-2004, 10:48 AM
is anyone out there with understanding of the rating system.if you could please share your knowledge with regards to a player who is unrated by acf but has fide and is an fm ,does it affect the australian ratings for the players who played him thanks.

Kerry Stead
30-01-2004, 11:27 AM
I *think* (I'm sure Bill will correct me if I'm wrong) that the players ELO rating gets used as a provisional rating, so the games count. As for the player's rating itself, it starts provisionally as his ELO rating, but with a very large RD (in much the same way as a player who has only played a few rated games, or has not played for many years has a high RD), meaning his own ACF rating will fluctuate far more than a reliably rated player with the same ACF rating. This high RD factor also has an impact on players that the player has played - given that his rating is unreliable, the increase or decrease of his opponent's rating after a game will be greatly reduced.
To use a hypothetical example (numbers indicative only and are in no way attempting to be an accurate estimate):
2296 v Bobby 1972 (2000)
result = win for 2296
rating change:
2296 = +30
Bobby1972 = -4
result = draw
rating change:
2296 = -20
Bobby1972 = +2
result = win for Bobby1972
rating change:
2296 = -50
Bobby1972 = +6
Hope that is roughly correct and helps.

arosar
30-01-2004, 11:55 AM
Not sure meself but I don't think playing a non-ACF rated player, notwithstanding his FIDE rating, affects ACF-rated players' ACF ratings at all. Isn't the FIDE only used for pairing purposes in this example?

Reverend Bill?

AR

bobby1972
30-01-2004, 12:53 PM
thanks very much ,i will let all of his rating worried oponents know.

Kevin Bonham
30-01-2004, 02:21 PM
AR, I think what you say used to be right but no longer is. My understanding from discussing this with Bill in the past is similar to Kerry's, ie ELO ratings count.

Bill Gletsos
30-01-2004, 03:43 PM
Kerry and Kevin are correct.
FIDE ratings count.
Therefore if an ACF rated player plays a player new to the ACF system who has a FIDE rating the game counts for both players.

FIDE rated players have their FIDE rating enetered into the system as their starting rating. Depending on their FIDE rating history. e.g. how active and based on how many games determines their starting RD. Generally though this RD would be less than 80.


Lets get one thing striaght though.
Its FIDE ratings not Elo ratings.

Many systems may be Elo based on the Elo rating system but a players international rating on the FIDE rating list is a FIDE rating.

arosar
30-01-2004, 03:49 PM
So if Gazza comes down here with his 2800-odd rating and he plays me and, by some miracle, I beat him in a mainline Najdorf, you calculate my ACF gain based on his 2800?

AR

Rincewind
30-01-2004, 04:03 PM
So if Gazza comes down here with his 2800-odd rating and he plays me and, by some miracle, I beat him in a mainline Najdorf, you calculate my ACF gain based on his 2800?

Yep, you'd make around 28 points. And I guarantee it will the the hardest 28 points you would have ever made. :wink:

Bill Gletsos
30-01-2004, 04:09 PM
So if Gazza comes down here with his 2800-odd rating and he plays me and, by some miracle, I beat him in a mainline Najdorf

In other words he dropped dead at the board. :lol: :whistle:

Bill Gletsos
30-01-2004, 04:12 PM
Yep, you'd make around 28 points. And I guarantee it will the the hardest 28 points you would have ever made. :wink:
More like 40. :)
A draw would get you 20.