Event: Division 5

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Opponent Rating Result
Nigel Gardner 89 ½ - ½
Nigel Gardner 89 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

89 = (178 + 400 * (0 - 0)) / 2)

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Opponent Rating Result
Tim Twentyman 115 0 - 1
Nigel Gardner 89 0 - 1
Stuart IE Green 82 ½ - ½
Alberto Gissi 119 0 - 1
Leslie J Fancourt 103 0 - 1
Les Hall 87 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-234 = (595 + 400 * (0 - 5)) / 6)