Event: City Chess Swiss 2019-20

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Opponent Rating Result
D Ian Calvert 1993 0 - 1
Brendan Whitworth 0 0 - 1
Anders Lundback 0 0 - 1
Vikhram Ravi 0 0 - 1
Keith S Jones 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

79 = (1993 + 400 * (0 - 4)) / 5)

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