Event: Division 1 - Open

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Opponent Rating Result
Charles Doidge 1630 1 - 0
Andrew S Kinder 1849 1 - 0
Martin Goldschmidt 1947 0 - 1
Andrew S Kinder 1849 ½ - ½
Ian Henry 1575 1 - 0
Phil J McConnell 1624 1 - 0
Catherine Black 1711 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1969 = (12185 + 400 * (5 - 1)) / 7)

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