Bonin, Jay R April 2008 FIDE Individual Chess Calculations

Individual Calculations April 2008

Bonin, Jay R Total change: 16.90

91st Annual Marshall Championship				New York, New York		USA	2007-12-07
Rc	Ro				w	n	change	K	*Kchg**	Game
2452	2343				5.50	9	2.28	10	22.80

Kopiecki, Edward P			2147	USA	1.00	1	0.25	10	2.50
Charbonneau, Pascal	g		2507	CAN	0.50	1	0.22	10	2.20
Krush, Irina	m	wg	2475	USA	0.50	1	0.18	10	1.80
Yudasin, Leonid G	g		2550	ISR	0.00	1	-0.23	10	-2.30
Hess, Robert L	m		2445	USA	1.00	1	0.64	10	6.40
Braylovsky, Gregor			2336	USA	1.00	1	0.49	10	4.90
Sarkar, Justin	m		2413	USA	0.50	1	0.10	10	1.00
Stripunsky, Alexander	g		2592	USA	0.50	1	0.31	10	3.10
Ehlvest, Jaan	g		2601	USA	0.50	1	0.32	10	3.20
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)

Empire State Open				New York New York		USA	2007-12-28
Rc	Ro				w	n	change	K	*Kchg**	Game
2248	2343				0.50	2	-0.76	10	-7.60

Zhao, Parker			2236	USA	0.50	1	-0.15	10	-1.50
Parry, Matt			2260	USA	0.00	1	-0.61	10	-6.10
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)

NY January Open				New York, NY		USA	2008-01-12
Rc	Ro				w	n	change	K	*Kchg**	Game
2460	2351				0.00	1	-0.35	10	-3.50

Rohde, Michael A	g		2460	USA	0.00	1	-0.35	10	-3.50
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)

40th Liberty Bell Open				Philadelphia, Pennsylvania		USA	2008-01-18
Rc	Ro				w	n	change	K	*Kchg**	Game
2374	2351				3.00	5	0.65	10	6.50

Parry, Matt			2269	USA	1.00	1	0.39	10	3.90
Vigorito, David	m		2406	USA	0.50	1	0.08	10	0.80
Mabe, Chris			2258	USA	1.00	1	0.37	10	3.70
Yudasin, Leonid	g		2549	ISR	0.50	1	0.26	10	2.60
Kaufman, Rymond	f		2386	USA	0.00	1	-0.45	10	-4.50
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)

New York February Open				New York, New York		USA	2008-02-09
Rc	Ro				w	n	change	K	*Kchg**	Game
2165	2351				2.00	3	-0.13	10	-1.30

Swaminathan, Rahul			2023	USA	1.00	1	0.13	10	1.30
Espuny, Ramon			2045	ESP	1.00	1	0.14	10	1.40
Lenderman, Alex	m		2427	USA	0.00	1	-0.40	10	-4.00
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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