Event: Northamptonshire Silver King League Division 2

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Opponent Rating Result
Ioan Strugar 1635 0 - 1
Richard N Ellis 1568 ½ - ½
Tim Broad 1530 ½ - ½
Joshua Stojkovic 1325 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1515 = (6058 + 400 * (1 - 1)) / 4)

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