Tkachenko Ivan
From Sarov, Russia
EMA: 15990417
Internal rating (RR)
Rating date Sept. 6, 2023 (latest changes Sept. 6, 2023).
71 place (368.63).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (672.73 * 3.30 * 0.14 + 595.74 * 3.10 * 0.29 + 828.83 * 4.05 * 0.71 + 0 + 0) / (3.30 * 0.14 + 3.10 * 0.29 + 4.05 * 0.71 + 1 + 1) = 518.8031336822847
p2 = (828.83 * 4.05 * 0.71 + 595.74 * 3.10 * 0.29 + 672.73 * 3.30 * 0.14) / max_coefficients = 218.46113111878634
score = 518.8031336822847 * 0.5 + 218.46113111878634 * 0.5 = 368.6321324005355
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-09-06 | 67 -> 71 | 384.71 -> 368.63 |
Kirov Tournament: 29% -> 14% |
2023-09-03 | 48 -> 67 | 403.38 -> 384.71 | |
2023-08-19 | 46 -> 48 | 415.70 -> 403.38 |
Agari team tournament: 43% -> 29% |
2023-08-12 | 43 -> 46 | 438.17 -> 415.70 |
Moscow Riichi 2022: 86% -> 71% |
2023-07-20 | 43 | 432.41 -> 438.17 | |
2023-07-06 | 42 -> 43 | 447.16 -> 432.41 |
Kirov Tournament: 43% -> 29% |
2023-06-19 | 38 -> 42 | 457.48 -> 447.16 |
Agari team tournament: 57% -> 43% |
2023-06-12 | 34 -> 38 | 475.32 -> 457.48 |
Moscow Riichi 2022: 100% -> 86% |
2023-06-11 | 30 -> 34 | 504.54 -> 475.32 | |
2023-05-28 | 30 | 501.18 -> 504.54 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 829 |
|
20/112 | 71% | 4.05 | RR | Moscow Riichi 2022 |
2 | 596 |
|
20/48 | 29% | 3.10 | RR | Agari team tournament |
3 | 673 |
|
19/56 | 14% | 3.30 | RR | Kirov Tournament |
4 | 600 |
|
15/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 |
5 | 373 |
|
53/84 | 0% | 4.20 | EMA | Haru Shanten 2019 |
6 | 298 |
|
34/48 | 0% | 3.10 | RR | Agari team tournament 2019 |