Event: Norfolk County Chess Championships

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Opponent Rating Result
Stephen LA Orton 2159 1 - 0
Jaden Jermy 2070 ½ - ½
Roy Hughes 2086 0 - 1
Michael J Gibbons 1931 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2062 = (8246 + 400 * (1 - 1)) / 4)

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