Event: Division Two

Opponent Rating Result
Robert Wooding 1565 1 - 0
Daniel Seaton 1772 ½ - ½
Harriet Haslehurst 1628 0 - 1
James N Stayt 1887 0 - 1
Peter S Dove 1933 0 - 1
James N Stayt 1894 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1580 = (10679 + 400 * (1 - 4)) / 6)

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