Event: Hebden Bridge Chess Club Championship 2022

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Opponent	Rating	Result
Adam Smith	0	1 - 0
Paul Gledhill	1549	1 - 0
Phil Cook	2117	0 - 1
Jeremy Butts	1642	1 - 0
John Kerrane	1669	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1635 = (6977 + 400 * (4 - 1)) / 5)