Event: Billingham Synthonia Chess Club Championship 2023-24

Opponent Rating Result
Oliver Butterfield 1000 1 - 0(def)
Brian Whitaker 1544 0 - 1
Harry Tennant 1350 0 - 1
Sean Cooke 959 1 - 0
Geoffrey Garnett 1409 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1216 = (5262 + 400 * (1 - 2)) / 4)

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