Event: Norfolk County Chess Championships

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Opponent Rating Result
Steve N Moore 1898 ½ - ½
Robin Blackwell 1818 0 - 1
David E Hall 1909 ½ - ½
Dan Joal Allwin Christopher 1791 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1854 = (7416 + 400 * (1 - 1)) / 4)

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