Event: Challenge Competition 1

Opponent Rating Result
Benjamin Carter 1181 ½ - ½
Roland Rattray 1473 1 - 0
Alan Davey 1507 0 - 1
David C Curtis 1602 0 - 1
Roland Rattray 1473 0 - 1
Steve Carter 1640 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1279 = (8876 + 400 * (1 - 4)) / 6)

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