Event: Norfolk County Chess Championships- Challengers

Opponent Rating Result
Sharvari Saharkar 1126 1 - 0
Arthur Dannatt 1582 ½ - ½
Stephen Livermore 1657 1 - 0
Colin R Payne 1655 0 - 1
David E McLean 1697 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1543 = (7717 + 400 * (2 - 2)) / 5)

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