Event: Division 2 - Under 6800

Opponent Rating Result
H William Ingham 1852 0 - 1
Piotr Ruszelak 1784 1 - 0(def)
Charles Doidge 1579 1 - 0
Aritra Paul 1374 1 - 0
Aritra Paul 1374 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1645 = (6179 + 400 * (2 - 1)) / 4)

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