Event: Division C

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Opponent Rating Result
T Ben O'Rourke 1630 ½ - ½
Richard Smith 1459 1 - 0
William J Moffatt 1699 ½ - ½
David Tuke 1606 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1699 = (6394 + 400 * (1 - 0)) / 4)

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