Event: Norfolk County Chess Championships

Opponent Rating Result
Adrian G Elwin 2037 1 - 0
Ken B McEwan 2125 1 - 0
Stephen LA Orton 2116 0 - 1
Philip R Bonafont 2107 ½ - ½
Vivash Samarakoon 2145 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2106 = (10530 + 400 * (2 - 2)) / 5)

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