Event: Silver Rook

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Opponent Rating Result
Philip May 98 0 - 1
Nigel Redmond 121 1 - 0
Ranyl W Hughes 89 ½ - ½
Dean Hepworth 109 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

104 = (417 + 400 * (1 - 1)) / 4)

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