Event: Division Two

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Opponent Rating Result
Richard J E McNally 1989 1 - 0
John Mildenhall 1930 0 - 1
Nicholas A Walker 2026 ½ - ½
Martin D Smyth 1909 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1864 = (7854 + 400 * (1 - 2)) / 4)

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