Event: North Norfolk Championship (85|10)

Opponent Rating Result
David L Jones 1510 1 - 0
Michael J Gibbons 1865 ½ - ½
Robin Blackwell 1831 ½ - ½
Jacob Mulligan 1155 1 - 0
Adam Blackbourn 1642 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1841 = (8003 + 400 * (3 - 0)) / 5)

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