Event: Division Two

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Opponent Rating Result
John N McDonald 1887 ½ - ½
Andrew MJ Robbings 1998 0 - 1
Steve Piercey 1947 1 - 0
Adam C Woodruff 1905 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1834 = (7737 + 400 * (1 - 2)) / 4)

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