Event: South Cheshire Shield

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Opponent Rating Result
Les Hall 90 1 - 0
John Prout 90 1 - 0
Harry Gardiner 105 0 - 1
Harry Gardiner 90 0 - 1
John Prout 90 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

93 = (465 + 400 * (2 - 2)) / 5)

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