Event: Capablanca group

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Opponent	Rating	Result
Stephen B James	1850
Yury Krylov	1641
Luca Parkes	1292
Nigel D Smith	1994
Tarun A Puri	0
Ishan VH Wiratunga	1961
Stephen Briggs	1679
Joseph Browne	1292
Calvin Chris Biju	1488
Simon Foster	1537
Alex Hoyle	0
Stephen B James	1850
Yury Krylov	1641
Luca Parkes	1292
Nigel D Smith	1994
Tarun A Puri	0
Ishan VH Wiratunga	1961
Stephen Briggs	1679
Joseph Browne	1292
Calvin Chris Biju	1488
Simon Foster	1537
Alex Hoyle	0

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

0 = (0 + 400 * (0 - 0)) / 0)