Event: IM Brown Shield

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Opponent Rating Result
R Malcolm Hara 1590 0 - 1
Nicholas Shaw 1273 1 - 0
Mark Waterhouse 1698 0 - 1
Andrew Nettleship 1547 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1527 = (6108 + 400 * (2 - 2)) / 4)

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