Event: Norfolk County Chess Championships

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Opponent Rating Result
Andrew D Hartland 1869 0 - 1
Nigel J Larter 1783 ½ - ½
Steve N Moore 1851 1 - 0
David E Hall 1949 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1963 = (7452 + 400 * (2 - 1)) / 4)

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