Event: Norfolk County Chess Championships- Challengers

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Opponent Rating Result
David B Elsey 1389 ½ - ½
Ed Orchard 0 1 - 0
Peter Stone 1663 0 - 1
Sharvari Saharkar 1550 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1251 = (4602 + 400 * (2 - 1)) / 4)

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