Event: Norfolk County Chess Championships

Opponent Rating Result
Antony C Hall 1930 0 - 1
Michael J Gibbons 1864 ½ - ½
Steve N Moore 1898 1 - 0
Adrian G Elwin 2037 ½ - ½
Ken B McEwan 2098 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1885 = (9827 + 400 * (1 - 2)) / 5)

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