Event: Richard Furness(500) League

Opponent Rating Result
Andy Laurence Coe 1818 0 - 1
James Harrison 1885 0 - 1
Mike Fleming 1548 1 - 0
Andy Laurence Coe 1818 ½ - ½
Lee P Kay 1960 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1646 = (9029 + 400 * (1 - 3)) / 5)

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