Event: Lewisham Club Championship

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Opponent Rating Result
David E Brown 1799 ½ - ½
Tim Gluckman 1945 ½ - ½
Norman Cho 1250 1 - 0
Andrew D Craig 1806 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1700 = (6800 + 400 * (1 - 1)) / 4)

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