Petrosian, Tigran July 2009 FIDE Individual Chess Calculations

Individual Calculations July 2009

Petrosian, Tigran Total change: 1.50

18th Annual Chicago Open - Open Section			Wheeling, Illinois		USA	2009-05-22
Rc	Ro			w	n	change	K	*Kchg**	Game
2618	2600			1.50	3	0.08	10	0.80

Sadvakasov, Darmen	g	2619	KAZ	0.50	1	0.03	10	0.30
Van Wely, Loek	g	2622	NED	0.50	1	0.03	10	0.30
Kacheishvili, Giorgi	g	2613	GEO	0.50	1	0.02	10	0.20
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)

2009 National Open			Las Vegas, Nevada		USA	2009-06-05
Rc	Ro			w	n	change	K	*Kchg**	Game
2555	2600			1.50	3	-0.17	10	-1.70

Izoria, Zviad	g	2619	GEO	0.50	1	0.03	10	0.30
Kacheishvili, Giorgi	g	2613	GEO	0.50	1	0.02	10	0.20
Lenderman, Alex	m	2434	USA	0.50	1	-0.22	10	-2.20
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)

Armenian Club Ch. 2009			Yerevan		ARM	2009-06-13
Rc	Ro			w	n	change	K	*Kchg**	Game
2503	2600			1.50	2	0.24	10	2.40

Minasian, Artashes	g	2566	ARM	0.50	1	-0.05	10	-0.50
Hovhannisyan, Robert		2439	ARM	1.00	1	0.29	10	2.90
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)

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