Event: Martin Cath Trophy

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Opponent Rating Result
Ian L Snape 2204 0 - 1
D Ian Calvert 1993 ½ - ½
Roy JD Reddin 1888 1 - 0
Howard Turner 1930 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1904 = (8015 + 400 * (1 - 2)) / 4)

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