Event: IM Brown

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Opponent Rating Result
Neil Griffiths 1624 ½ - ½
Richard Tate 1557 0 - 1
Malcolm E Corbett 1847 ½ - ½
Peter Micklethwaite 1984 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1553 = (7012 + 400 * (0 - 2)) / 4)

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