Event: Reading-Chess-Other-Rated

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Opponent	Rating	Result
Ayan Pradhan	1727	½ - ½
Martin Czar	0	1 - 0
Nathan Magee	1489	1 - 0

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

1339 = (3216 + 400 * (2 - 0)) / 3)