Event: South Cheshire Shield

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Opponent Rating Result
Andrew Crosby 1447 1 - 0
Martyn Stanley 1100 0 - 1
Roger Coleman 1279 1 - 0
Mycle Scheuer 1474 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1325 = (5300 + 400 * (2 - 2)) / 4)

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