Event: Open

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Opponent Rating Result
Keith R Ingram 1915 0 - 1
Golam S Ali 1942 0 - 1
Keith R Ingram 1915 ½ - ½
Golam S Ali 1942 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1629 = (7714 + 400 * (0 - 3)) / 4)

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