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Individual Calculations August 2023 |
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| Koelmans, Jan Willem Total change: -33.80 | |   |
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| Amsterdam Science Park Chess Tournament 2023 - Group B | Amsterdam | NED | 2023-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1682 | 1868 | 5.00 | 9 | -1.69 | 20 | -33.80 | |
|  Selie, Martin | | | 1668 | NED | 0.00 | 1 | -0.76 | 20 | -15.20 | |  Lith, Tony | | | 1652 | NED | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Pelt, Hans | | | 1641 | NED | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Vlieger, Olaf | | | 1757 | NED | 0.50 | 1 | -0.15 | 20 | -3.00 | | | Said, Omar | | | 1688 | NED | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Van Kanten, Brian | | | 1669 | NED | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Stapersma, Dick | | | 1712 | NED | 1.00 | 1 | 0.29 | 20 | 5.80 | | | De Rooij, Kevin | | | 1656 | NED | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Kerkhoff, Chris | | | 1694 | NED | 0.50 | 1 | -0.23 | 20 | -4.60 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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