Event: IM Brown Shield

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Opponent Rating Result
Michael Johnson 1743 ½ - ½
Bedat Lee 1503 1 - 0
Howard Brears 1600 0 - 1
Ben D Science 1692 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1635 = (6538 + 400 * (1 - 1)) / 4)

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