Event: Reading-Chess-Other-Rated

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Opponent	Rating	Result
Martin Czar	0	0 - 1
Stuart W Knox	1913	½ - ½
Michael Celaya	1515	1 - 0

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

1143 = (3428 + 400 * (1 - 1)) / 3)