Event: Sheffield Individual Championships

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Opponent Rating Result
John A Clark 1814 0 - 1
David Burn 1502 1 - 0
Elliott Spencer 1564 0 - 1
W (Bill) Ward 1657 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1534 = (6537 + 400 * (1 - 2)) / 4)

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