Event: Norfolk County Chess Championships

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Opponent Rating Result
Dave Dempster 1930 ½ - ½
Roy Hughes 2086 0 - 1
Mark Lim 1918 ½ - ½
Steve J Pullinger 1988 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1881 = (7922 + 400 * (0 - 1)) / 4)

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