Event: South Cheshire Shield

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Opponent Rating Result
David S Johnson 1574 0 - 1
David P Price 1666 1 - 0
Nicholas PA Wright 1461 0 - 1
Oskar Jarzynski 1493 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1349 = (6194 + 400 * (1 - 3)) / 4)

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