Event: Norfolk County Chess Championships- Challengers

Opponent Rating Result
Bharath Klass 1600 0 - 1
David C May 1493 0 - 1
Heather Enid Walker 1200 ½ - ½
David B Elsey 1407 1 - 0
John F Weston 1598 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1460 = (7298 + 400 * (2 - 2)) / 5)

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