Event: Ilkley - Silver King

Opponent Rating Result
Bill Tait 1657 ½ - ½
C Barry Taylor 1633 1 - 0
John L Seppings 0 ½ - ½
Gerard P Killoran 1993 0 - 1
David W Adam 1755 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1408 = (7038 + 400 * (1 - 1)) / 5)

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