Event: Norfolk County Chess Championships- Challengers

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Opponent Rating Result
Dennis G Driscoll 1339 ½ - ½
Thomas Ewart 1603 1 - 0
Larysa Klepikovska 1496 ½ - ½
Sharvari Saharkar 1473 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1478 = (5911 + 400 * (1 - 1)) / 4)

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