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Individual Calculations February 2019 |
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| Den Boer, Paul Total change: -62.00 | |   |
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| Chess Festival Groningen 2018 - Open B and C | Groningen | NED | 2018-12-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1680 | 1907 | 4.50 | 9 | -2.48 | 20 | -49.60 | |
|  Martinez, Sara | | | 1583 | NED | 0.50 | 1 | -0.37 | 20 | -7.40 | |  Smit, Tom | | | 1514 | NED | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Van Dijk, Dominic | | | 1672 | NED | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Neisingh, Nils | | | 1662 | NED | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Hillenkamp, Melchior | | | 1637 | NED | 0.00 | 1 | -0.83 | 20 | -16.60 | | | Schwenke, Stefan | | | 1737 | GER | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Pompstra, Henk | | | 1758 | NED | 1.00 | 1 | 0.30 | 20 | 6.00 | | | Achuthan, Dylan | | | 1759 | NED | 0.00 | 1 | -0.70 | 20 | -14.00 | | | Manenschijn, Wouter | | | 1798 | NED | 0.50 | 1 | -0.15 | 20 | -3.00 | |
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) | | | | Tata Steel Chess Tournament 2018 - Weekendvierkampen | Wijk aan Zee | NED | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2026 | 1907 | 1.00 | 2 | 0.32 | 20 | 6.40 | |
| | Faber, Hugo | | | 2061 | NED | 0.00 | 1 | -0.29 | 20 | -5.80 | | | Van Dijk, Olger | | | 1990 | NED | 1.00 | 1 | 0.61 | 20 | 12.20 | |
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) | | | | Tata Steel Chess Tournament 2018 - Tienkampen | Wijk aan Zee | NED | 2019-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1953 | 1907 | 3.00 | 9 | -0.94 | 20 | -18.80 | |
| | Kanis, Sierk | | | 1968 | NED | 0.00 | 1 | -0.42 | 20 | -8.40 | | | Borst, Filip | | | 1920 | NED | 0.00 | 1 | -0.48 | 20 | -9.60 | | | Koelmans, Jan Willem | | | 2003 | NED | 0.50 | 1 | 0.13 | 20 | 2.60 | | | Van Geffen, Ben | | | 2033 | NED | 0.50 | 1 | 0.17 | 20 | 3.40 | | | Schouten, Mathias Lind | | | 1939 | NOR | 0.00 | 1 | -0.46 | 20 | -9.20 | | | Van Dijkhuizen, Robbert | | | 1827 | NED | 0.50 | 1 | -0.11 | 20 | -2.20 | | | Van Oudvorst, Bert | | | 1926 | NED | 0.50 | 1 | 0.03 | 20 | 0.60 | | | Zondag, Jason | | | 1948 | NED | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Eveleens, Wim | | | 2013 | NED | 0.00 | 1 | -0.36 | 20 | -7.20 | |
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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