Event: Division Six

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Opponent Rating Result
Brian Allsop 94 0 - 1
John Burke 94 ½ - ½
Joyce H Evans 59 1 - 0
Ivaylo Vasilev 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

162 = (247 + 400 * (2 - 1)) / 4)

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