Event: Norfolk County Chess Championships- Challengers

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Opponent Rating Result
Heather Enid Walker 1261 1 - 0
Alan F Page 1744 1 - 0
Stephen Livermore 1752 1 - 0
David J Payne 1744 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1925 = (6501 + 400 * (3 - 0)) / 4)

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