Event: Billingham Synthonia June Rapid 2023

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Opponent	Rating	Result
Graham E Edwards	1302	0 - 1
Nick Tadd	1257	1 - 0
Paul Scott	1286	1 - 0

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

1415 = (3845 + 400 * (2 - 1)) / 3)