Event: Ilkley - Silver King

Opponent Rating Result
Peter D Ward 1577 1 - 0
John Cleland 1610 1 - 0
Trevor Murch 1777 1 - 0
Stuart M Johnson 1528 1 - 0
John L Seppings 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1618 = (6492 + 400 * (4 - 0)) / 5)

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