Event: South Cheshire Shield

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Opponent Rating Result
Rob Aked 1239 0 - 1
Maria Sangurska 1100 1 - 0
Peter Kanalos 1164 1 - 0
Damon Williams 1209 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1178 = (4712 + 400 * (2 - 2)) / 4)

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