Event: South Cheshire Shield

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Opponent Rating Result
Martin J Chadwick 1328 1 - 0
Mick Tait 1594 ½ - ½
Douglas J Barnett 1467 ½ - ½
Waylon Chan 1246 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1509 = (5635 + 400 * (1 - 0)) / 4)

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