Event: Norfolk County Chess Championships

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Opponent Rating Result
Steve N Moore 1895 1 - 0
Mervyn J Hughes 1938 ½ - ½
Andrew D Hartland 1870 1 - 0
Martin G Walker 2187 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2073 = (7890 + 400 * (2 - 1)) / 4)

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