Event: Open

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Opponent Rating Result
Lewis A Turner 1981 ½ - ½
Shabir Okhai 2272 0 - 1
Andrew J Morley 2075 0 - 1
Philip J Horspool 2067 ½ - ½
Martin P Burrows 2162 ½ - ½
Simon E Lazarus 2068 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1971 = (12625 + 400 * (0 - 2)) / 6)

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