Tkachenko Ivan
From Sarov, Russia
EMA: 15990417
Common russian riichi rating (CRR)
Rating date Feb. 19, 2023 (latest changes Feb. 19, 2023).
32 place (509.94).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 2.80 * 1) = 14.55
p1 = (672.73 * 3.30 * 0.71 + 595.74 * 3.10 * 0.71 + 828.83 * 4.05 * 1 + 0 + 0) / (3.30 * 0.71 + 3.10 * 0.71 + 4.05 * 1 + 1 + 1) = 589.5286173730314
p2 = (828.83 * 4.05 * 1 + 672.73 * 3.30 * 0.71 + 595.74 * 3.10 * 0.71) / max_coefficients = 430.35670103092787
score = 589.5286173730314 * 0.5 + 430.35670103092787 * 0.5 = 509.9426592019796
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-02-19 | 31 -> 32 | 519.13 -> 509.94 |
Agari team tournament: 86% -> 71% |
| 2023-01-28 | 32 -> 31 | 516.74 -> 519.13 | |
| 2023-01-06 | 30 -> 32 | 529.21 -> 516.74 |
Kirov Tournament: 86% -> 71% |
| 2022-12-19 | 28 -> 30 | 535.90 -> 529.21 |
Agari team tournament: 100% -> 86% |
| 2022-12-03 | 132 -> 28 | 168.93 -> 535.90 | |
| 2021-02-01 | 150 -> 132 | 315.12 -> 168.93 | |
| 2020-02-01 | 150 | 315.12 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 829 |
|
20/112 | 100% | 4.05 | RR | Moscow Riichi 2022 |
| 2 | 596 |
|
20/48 | 71% | 3.10 | RR | Agari team tournament |
| 3 | 673 |
|
19/56 | 71% | 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 |