Event: Norfolk County Chess Championships- Challengers

Opponent Rating Result
Mark Philip Baldock 1465 1 - 0
David C May 1567 1 - 0
Stephen Livermore 1752 1 - 0
David J Payne 1744 0 - 1
John F Lambert 1732 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1892 = (8260 + 400 * (4 - 1)) / 5)

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