Event: IM Brown Shield

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Opponent Rating Result
Hasti Pargan 0 1 - 0
Richard Tate 1510 ½ - ½
Robert A Dean 1811 0 - 1
J Myers 1654 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1344 = (4975 + 400 * (2 - 1)) / 4)

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