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Individual Calculations December 2017 |
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| Willathgamuwa, Rowan Total change: 73.20 | |   |
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| 2017 Norths John Purdy Memorial Open | Sydney | AUS | 2017-09-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1706 | 1907 | 3.50 | 5 | -0.25 | 40 | -10.00 | |
|  Jeffreys, Roger W | | | 1649 | AUS | 0.50 | 1 | -0.32 | 40 | -12.80 | |  Armstrong, Gary | | | 1574 | AUS | 1.00 | 1 | 0.12 | 40 | 4.80 | | | Taffard, Christopher John | | | 1695 | NZL | 1.00 | 1 | 0.23 | 40 | 9.20 | | | Glissan, Paul | | | 1799 | AUS | 1.00 | 1 | 0.35 | 40 | 14.00 | | | Cooper, Nicholas | | | 1813 | AUS | 0.00 | 1 | -0.63 | 40 | -25.20 | |
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) | | | | World Junior under 20 Championship 2017 | Tarvisio | ITA | 2017-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2190 | 1907 | 4.00 | 11 | 2.08 | 40 | 83.20 | |
| | Mohammad, Nubairshah Shaikh | m | | 2307 * | IND | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Urbanc, Peter | f | | 2290 | SLO | 0.00 | 1 | -0.09 | 40 | -3.60 | | | Schweighoffer, Martin | | | 2123 | SUI | 1.00 | 1 | 0.78 | 40 | 31.20 | | | Kumar, Gaurav | | | 2297 | IND | 0.00 | 1 | -0.09 | 40 | -3.60 | | | Sesar, Ivan | | | 2207 | BIH | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Bezuidenhout, Roland | c | | 2118 | RSA | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Donati, Michele | | | 1978 | ITA | 1.00 | 1 | 0.60 | 40 | 24.00 | | | Lumachi, Gabriele | | | 2111 | ITA | 1.00 | 1 | 0.76 | 40 | 30.40 | | | Pang, Tao | | | 2192 | CHN | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Pavic, Filip | | | 2228 | CRO | 1.00 | 1 | 0.87 | 40 | 34.80 | | | Tasdogen, Dincer | | | 2235 | TUR | 0.00 | 1 | -0.13 | 40 | -5.20 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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