Event: Division 2

Opponent Rating Result
Chris J Todd 1914 ½ - ½
Pawel Slonczuk 1671 1 - 0
John R McKenna 1656 0 - 1
Jagdip TK Patel 1931 ½ - ½
Xavier Cowan 1883 1 - 0
M Mohammed Ashraf Hossain 1722 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1930 = (10777 + 400 * (3 - 1)) / 6)

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