Tkachenko Ivan
From Sarov, Russia
EMA: 15990417
Internal rating (RR)
Rating date July 28, 2023 (latest changes July 28, 2023).
43 place (438.17).
how we calculated rating score
max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.57) = 13.421155
p1 = (672.73 * 3.30 * 0.29 + 595.74 * 3.10 * 0.43 + 828.83 * 4.05 * 0.86 + 0 + 0) / (3.30 * 0.29 + 3.10 * 0.43 + 4.05 * 0.86 + 1 + 1) = 555.7307020461143
p2 = (828.83 * 4.05 * 0.86 + 595.74 * 3.10 * 0.43 + 672.73 * 3.30 * 0.29) / max_coefficients = 320.60355461210304
score = 555.7307020461143 * 0.5 + 320.60355461210304 * 0.5 = 438.16712832910866
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-07-20 | 43 | 432.41 -> 438.17 | |
2023-07-06 | 42 -> 43 | 447.16 -> 432.41 |
Kirov Tournament: 43% -> 29% |
2023-06-19 | 115 -> 42 | 168.93 -> 447.16 |
Agari team tournament: 57% -> 43% |
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 | 86% | 4.05 | RR | Moscow Riichi 2022 | Moscow |
2 | 596 |
|
20/48 | 43% | 3.10 | RR | Agari team tournament | Moscow |
3 | 673 |
|
19/56 | 29% | 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 |