Event: Silver Rook

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Opponent Rating Result
Stephen Burton 99 ½ - ½
Margaret Rowley 94 1 - 0
Sri Sriharan 98 1 - 0
Richard Wilson 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

273 = (291 + 400 * (2 - 0)) / 4)

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