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Individual Calculations May 2023 |
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| Llewellyn, Julian D Total change: 114.80 | |   |
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| London Chess League Weekend Congress (31 March) - U1800 | London W6 | ENG | 2023-03-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1578 | 1594 | 3.50 | 4 | 1.42 | 20 | 28.40 | |
|  Tree, Djuna | | | 1377 | ENG | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Sciaudone, Francesco | | | 1773 | ITA | 1.00 | 1 | 0.73 | 20 | 14.60 | |  Passariello, Andrea | | | 1526 | ITA | 1.00 | 1 | 0.41 | 20 | 8.20 | | | Prince, Alan R | | | 1635 | ENG | 0.50 | 1 | 0.06 | 20 | 1.20 | |
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) | | | | 65th Southend Easter Congress - U1900 | Southend-on-Sea | ENG | 2023-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1741 | 1598 | 5.50 | 7 | 3.30 | 20 | 66.00 | |
| | Smith, David | | | 1813 | ENG | 1.00 | 1 | 0.77 | 20 | 15.40 | | | Laundy, Peter R | | | 1783 | ENG | 0.50 | 1 | 0.24 | 20 | 4.80 | | | Murrell, Mark R A | | | 1689 | ENG | 1.00 | 1 | 0.62 | 20 | 12.40 | | | Turicar, Goran | | | 1793 | CRO | 0.50 | 1 | 0.25 | 20 | 5.00 | | | Clegg, Robert | | | 1680 | ENG | 1.00 | 1 | 0.61 | 20 | 12.20 | | | Finnegan, Oliver | | | 1648 | ENG | 1.00 | 1 | 0.57 | 20 | 11.40 | | | Jacob, Sydney J | | | 1781 | ENG | 0.50 | 1 | 0.24 | 20 | 4.80 | |
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) | | | | Central London Chess Congress April 2023 - Major Under 2000 | London | ENG | 2023-04-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1603 | 1598 | 2.50 | 3 | 1.02 | 20 | 20.40 | |
| | Lake, Chris | | | 1704 | SRB | 0.50 | 1 | 0.14 | 20 | 2.80 | | | Farahmandpour, Ehsan | | | 1481 | ENG | 1.00 | 1 | 0.34 | 20 | 6.80 | | | Sturt, Charles A | | | 1625 | ENG | 1.00 | 1 | 0.54 | 20 | 10.80 | |
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) | | |
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