Event: u1850 County Championship

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Opponent Rating Result
Gert De Block 1595 ½ - ½
Harry Bellano 1457 0 - 1
Chris Flynn 1577 0 - 1
Michael Osborn 1553 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1446 = (6182 + 400 * (1 - 2)) / 4)

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