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Individual Calculations August 2023 |
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| Boztas, Lana Total change: -7.40 | |   |
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| Coulsdon Chess Summer Cup 2023 - U1500 Round 2 - July | Coulsdon | ENG | 2023-07-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1263 | 1332 | 1.00 | 1 | 0.40 | 20 | 8.00 | |
|  Mahadevan, Rohit | | | 1263 | ENG | 1.00 | 1 | 0.40 | 20 | 8.00 | |
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) | | | | 2023 British Championship: Weekender - Yates | Leicester | ENG | 2023-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1334 | 1332 | 0.00 | 1 | -0.50 | 20 | -10.00 | |
| | Miles, Barry S | | | 1334 | ENG | 0.00 | 1 | -0.50 | 20 | -10.00 | |
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) | | | | 2023 British Championship: AM Under 1600 | Leicester | ENG | 2023-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1391 | 1332 | 1.00 | 3 | -0.27 | 20 | -5.40 | |
|  Gilbert, David J | | | 1520 | ENG | 1.00 | 1 | 0.74 | 20 | 14.80 | | | Mehrgan, Mehrsam | | | 1118 | IRI | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Pride, Stephen C | | | 1536 | ENG | 0.00 | 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) | | |
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