Event: South Cheshire Shield

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Opponent Rating Result
Alberto Gissi 1653 0 - 1
Sandra G Blackburn 1567 ½ - ½
Malcolm Fletcher 1500 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1307 = (4720 + 400 * (0 - 2)) / 3)

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