Event: Division 3

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Opponent Rating Result
Iain Reeve 1709 ½ - ½
Ray Tarling 1884 0 - 1
Edward Hargreaves 1651 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1481 = (5244 + 400 * (0 - 2)) / 3)

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