Event: Norfolk County Chess Championships

Opponent Rating Result
Samuel Gaffney 1821 ½ - ½
Mervyn J Hughes 1855 0 - 1
Benjamin PQ Collinson 1972 0 - 1
James Pack 1868 1 - 0
Chris Perkins 1775 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1858 = (9291 + 400 * (2 - 2)) / 5)

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