Event: B&DCL Div 4

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Opponent Rating Result
Christine A Roberts 95 ½ - ½
Rachel Richardson 77 ½ - ½
George WP Dodman 92 ½ - ½
Frank ME Hamilton-Taylor 116 1 - 0
Andrew Manson 100 0 - 1
Krzystoff Itrich 100 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

30 = (580 + 400 * (1 - 2)) / 6)

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