Tkachenko Ivan
From Sarov, Russia
EMA: 15990417
Internal rating (RR)
Rating date Oct. 19, 2023 (latest changes Oct. 19, 2023).
78 place (326.59).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.57) = 14.26417
p1 = (672.73 * 3.30 * 0.14 + 595.74 * 3.10 * 0.14 + 828.83 * 4.05 * 0.57 + 0 + 0) / (3.30 * 0.14 + 3.10 * 0.14 + 4.05 * 0.57 + 1 + 1) = 477.9745750880233
p2 = (828.83 * 4.05 * 0.57 + 672.73 * 3.30 * 0.14 + 595.74 * 3.10 * 0.14) / max_coefficients = 175.20823153397637
score = 477.9745750880233 * 0.5 + 175.20823153397637 * 0.5 = 326.59140331099985
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-10-19 | 77 -> 78 | 340.43 -> 326.59 |
Agari team tournament: 29% -> 14% |
2023-10-12 | 67 -> 77 | 368.63 -> 340.43 |
Moscow Riichi 2022: 71% -> 57% |
2023-09-28 | 70 -> 67 | 368.63 | |
2023-09-20 | 71 -> 70 | 368.63 | |
2023-09-06 | 67 -> 71 | 384.71 -> 368.63 |
Kirov Tournament: 29% -> 14% |
2023-09-03 | 48 -> 67 | 403.38 -> 384.71 | |
2023-09-01 | 115 -> 48 | 168.93 -> 403.38 | |
2021-02-01 | 132 -> 115 | 315.12 -> 168.93 | |
2020-02-01 | 132 | 315.12 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
---|---|---|---|---|---|---|---|---|---|
1 | 829 |
|
20/112 | 57% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
2 | 596 |
|
20/48 | 14% | 3.10 | RR | Agari team tournament | Moscow | |
3 | 673 |
|
19/56 | 14% | 3.30 | RR | Kirov Tournament | Kirov | |
4 | 600 |
|
15/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
5 | 373 |
|
53/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm | |
6 | 298 |
|
34/48 | 0% | 3.10 | RR | Agari team tournament 2019 | Moscow |