Event: Kenneth Appleby (U1700)

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Opponent	Rating	Result
Ian D Strickland	1646	1 - 0(def)
Richard Higham	1600	½ - ½
Peter J Clark	0	½ - ½
Stuart Fortey	0	0 - 1
Chris Hare	0	0 - 1

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

200 = (1600 + 400 * (0 - 2)) / 4)