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Individual Calculations April 2023 |
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| Davis, Tony J Total change: -40.60 | |   |
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| 2023 Hobsons Bay Honourable Bob Round 5 | Melbourne | AUS | 2023-02-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1974 | 1726 | 0.00 | 1 | -0.19 | 20 | -3.80 | |
|  Hibberd, Nathan | | | 1974 | AUS | 0.00 | 1 | -0.19 | 20 | -3.80 | |
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) | | | | 2023 Chess Artists Club Championship Rounds 5-7 | Melbourne | AUS | 2023-03-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1671 | 1745 | 1.50 | 3 | -0.30 | 20 | -6.00 | |
|  Chmiel, Rad | | | 1581 | AUS | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Solomontchik, Daniel | | | 1671 | FID | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Chiverton, Fergus | | | 1760 | AUS | 0.00 | 1 | -0.48 | 20 | -9.60 | |
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) | | | | 2023 Ballarat Begonia Open | Ballarat | AUS | 2023-03-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1593 | 1745 | 2.00 | 5 | -1.39 | 20 | -27.80 | |
| | Dias, Douglas | | | 1540 | AUS | 0.00 | 1 | -0.76 | 20 | -15.20 | | | Hong, Wilbur | | | 1607 | AUS | 1.00 | 1 | 0.31 | 20 | 6.20 | | | Dragicevic, Domagoj | f | | 2087 | AUS | 0.00 | 1 | -0.12 | 20 | -2.40 | | | McGrath, Callum | | | 1387 | AUS | 0.00 | 1 | -0.90 | 20 | -18.00 | | | Brown, Greg | | | 1345 * | AUS | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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) | | | | 2023 Hobsons Bay Purdy Cup Rounds 1-3 | Melbourne | AUS | 2023-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1664 | 1745 | 1.00 | 2 | -0.15 | 20 | -3.00 | |
| | Kulkarni, Yogesh | | | 1908 | NZL | 1.00 | 1 | 0.72 | 20 | 14.40 | | | Nowak, Ruben | | | 1420 | AUS | 0.00 | 1 | -0.87 | 20 | -17.40 | |
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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