Event: Division 3

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Opponent	Rating	Result
Jatinder Singh	1310	1 - 0
Will Lilburn-Quick	1393	½ - ½
Rik Panesar	1257	1 - 0
John E Parr	1415	1 - 0
Adrian Arthur	1289	1 - 0
Simon Jones	1408	1 - 0
Kenneth L Marsden	1373	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1692 = (9445 + 400 * (6 - 0)) / 7)