Event: Silver Rook

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Opponent Rating Result
John Hipshon 127 ½ - ½
Mark Shelmerdine 127 ½ - ½
Hugh Thornton 126 ½ - ½
Richard Hersey 131 1 - 0
Simon Watson 148 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

132 = (659 + 400 * (1 - 1)) / 5)

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