Event: Norfolk County Chess Championships

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Opponent Rating Result
Gerald Moore 2106 0 - 1
David E Hall 1909 0 - 1
Steve N Moore 1898 0 - 1
James Pack 1846 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1640 = (7759 + 400 * (0 - 3)) / 4)

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