Event: IM Brown Shield

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Opponent Rating Result
Daniel Meredith 1683 ½ - ½
Barry Marshall 1761 0 - 1
Steve DG Huxley 1829 1 - 0
Michael Johnson 1768 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1860 = (7041 + 400 * (2 - 1)) / 4)

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