Event: Eastman Cup

Opponent Rating Result
Andrew H Heard 1862 1 - 0
Alexander Cherniaev 2488 0 - 1
James AB Stevenson 2110 0 - 1
Philip J Makepeace 2187 0 - 1
Laurie Mackellar 1700 1 - 0
Cal Cashin 1658 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1934 = (12005 + 400 * (2 - 3)) / 6)

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