Event: Capablanca group

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Opponent	Rating	Result
Nigel D Smith	2014	0 - 1
Ishan VH Wiratunga	0	0 - 1
Tarun A Puri	0	1 - 0
Stephen Briggs	1711
Calvin Chris Biju	1355	1 - 0
Joseph Browne	0
Alex Hoyle	0
Stephen B James	1943
Yury Krylov	1682	0 - 1
Luca Parkes	1249
Nigel D Smith	2014	0 - 1
Daniel Juden	0
Ishan VH Wiratunga	0	0 - 1
Stephen Briggs	1711
Calvin Chris Biju	1355	0 - 1
Tarun A Puri	0	1 - 0
Joseph Browne	0
Alex Hoyle	0
Stephen B James	1943
Yury Krylov	1682	0 - 1
Luca Parkes	1249
Daniel Juden	0

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

850 = (10102 + 400 * (3 - 7)) / 10)