Event: U1800 Cup

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Opponent Rating Result
Timothy J Wesson 1795 1 - 0
Simon Riley 1698 ½ - ½
Robert L Jones 1765 ½ - ½
Judith Heffer 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1515 = (5258 + 400 * (2 - 0)) / 4)

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