Event: Division 3

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Opponent Rating Result
Richard J F Caves 1418 0 - 1
Samuel Kerruish 1480 ½ - ½
Alan Raybould 1300 1 - 0
Lee Pollock 1420 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1305 = (5618 + 400 * (1 - 2)) / 4)

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