Event: Division A

Opponent Rating Result
Malcolm R Peacock 2074 0 - 1
Malcolm R Peacock 2074 ½ - ½
Mike J Surtees 2188 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1979 = (6336 + 400 * (0 - 1)) / 3)

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