Event: Kenneth Appleby (U1700)

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Opponent Rating Result
Lewis Carroll 1374 0 - 1
Steven Hodgson 1375 0 - 1
Edward Rivlin 1331 1 - 0
Ivor Timmis 1479 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1390 = (5559 + 400 * (2 - 2)) / 4)

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