Event: Norfolk County Chess Championships

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Opponent Rating Result
Vivash Samarakoon 2087 ½ - ½
John F Lambert 1770 ½ - ½
David E Hall 1949 ½ - ½
Andrew D Hartland 1869 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1919 = (7675 + 400 * (0 - 0)) / 4)

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