Event: Norfolk County Chess Championships- Challengers

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Opponent Rating Result
John F Weston 1598 1 - 0
Chris Flynn 1609 ½ - ½
Armando Galletti 1675 1 - 0
Colin R Payne 1655 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1834 = (6537 + 400 * (2 - 0)) / 4)

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