Event: York Summer 2023 Group 2

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Opponent	Rating	Result
Paul W Jones	0	1 - 0
Norman G Andrews	0	½ - ½
Jack Howorth	0	½ - ½
T Noel Stewart	0	1 - 0
Stephen Donkin	0	½ - ½
David Wm Smith	0	½ - ½
Derek Toyne	0	1 - 0
Herbert Lockwood	0	1 - 0

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

200 = (0 + 400 * (4 - 0)) / 8)