Event: South Cheshire Shield

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Opponent Rating Result
Alberto Gissi 116 1 - 0
Martin Gill 116 ½ - ½
Martin F Frisher 120 0 - 1
John HM Smith 131 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

121 = (483 + 400 * (1 - 1)) / 4)

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