Event: Norfolk County Chess Championships

Opponent Rating Result
Chris Perkins 1774 1 - 0
Martin G Walker 2230 ½ - ½
Mervyn J Hughes 1855 1 - 0
Stephen LA Orton 2121 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2095 = (7980 + 400 * (2 - 1)) / 4)

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