Event: Rapidplay Cup u1451

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Opponent Rating Result
Ibrahim Riaz 1007 ½ - ½
Ibrahim Riaz 1007 1 - 0
Harry H Altoft 1245 1 - 0
Harry H Altoft 1245 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1226 = (4504 + 400 * (2 - 1)) / 4)

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