Event: Norfolk County Chess Championships- Challengers

Opponent Rating Result
Heather Enid Walker 1200 1 - 0
Graham K Blowers 1741 ½ - ½
Armando Galletti 1675 0 - 1
Johnny Danger 1552 0 - 1
David C May 1493 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1452 = (7661 + 400 * (1 - 2)) / 5)

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