Event: IM Brown Shield

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Opponent Rating Result
Zak Tomlinson 1792 0 - 1
Mark Waterhouse 1713 ½ - ½
Nathan Madzia 1763 ½ - ½
Daniel Meredith 1768 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1659 = (7036 + 400 * (0 - 1)) / 4)

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