Event: Division Two

Opponent Rating Result
Ivan Stipcevic 2028 0 - 1
Soham Kumar 1891 ½ - ½
Geoffrey A Foxon 1521 1 - 0
John P Carter 1777 ½ - ½
Harvey L Duckers 2029 0 - 1
Colin J Lyne 1864 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1785 = (11110 + 400 * (1 - 2)) / 6)

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