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Event: Sheffield Chess Centre Open

Opponent Rating Result
Ewan Kershaw 1912 0 - 1
Eldars Gulijevs 1864 0 - 1
Tomas Tomko 1850 1 - 0
Ionel Dragan 1964 0 - 1
Lindsay Pyun 1766 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1631 = (9356 + 400 * (1 - 4)) / 5)

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