Event: u1850 County Championship

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Opponent Rating Result
Davis Nicholson 1517 ½ - ½
Daniel Pugh 0 0 - 1
Stephen Livermore 1659 0 - 1
Corinne Mountford 1641 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1004 = (4817 + 400 * (0 - 2)) / 4)

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