Event: Norfolk County Chess Championships

Opponent Rating Result
Stephen LA Orton 2144 0 - 1
David J Payne 1762 1 - 0
Steve N Moore 1851 ½ - ½
John F Lambert 1770 0 - 1
Jonathan L Collins 1929 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1891 = (9456 + 400 * (2 - 2)) / 5)

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