Event: LADDER

Opponent Rating Result
Mark Cox 1086 1 - 0
Paul W O'Brien 1727 1 - 0
Nicholas H Skinner 1843 0 - 1
Ben Glyn-Jones 1358 0 - 1
Philip Crompton 1533 1 - 0
David Wallis 1600 0 - 1
David Wallis 1657 1 - 0
Mark Cox 1076 1 - 0
David Wallis 1657 0 - 1
David Wallis 1619 1 - 0
Keith Guinness 1600 ½ - ½
Paul W O'Brien 1637 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1566 = (18393 + 400 * (6 - 5)) / 12)

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