Event: Division 1

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Opponent Rating Result
William Golding 1871 1 - 0
Rajeiv Ratnesan 0 ½ - ½
Alexey M Lapidus 1728 0 - 1
Alexey M Lapidus 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

800 = (3599 + 400 * (1 - 2)) / 4)

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