Tkachenko Ivan
From Sarov, Russia
EMA: 15990417
Common russian riichi rating (CRR)
Rating date Nov. 5, 2022 (latest changes Nov. 5, 2022).
18 place (557.70).
how we calculated rating score
max_coefficients = (4.05 * 1 + 3.50 * 1 + 3.45 * 1 + 3.30 * 1) = 14.3
p1 = (672.73 * 3.30 * 1 + 595.74 * 3.10 * 1 + 828.83 * 4.05 * 1 + 0 + 0) / (3.30 * 1 + 3.10 * 1 + 4.05 * 1 + 1 + 1) = 596.2706827309237
p2 = (828.83 * 4.05 * 1 + 672.73 * 3.30 * 1 + 595.74 * 3.10 * 1) / max_coefficients = 519.1307692307691
score = 596.2706827309237 * 0.5 + 519.1307692307691 * 0.5 = 557.7007259808464
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2022-11-05 | 132 -> 18 | 168.93 -> 557.70 | |
| 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 | 100% | 3.10 | RR | Agari team tournament |
| 3 | 673 |
|
19/56 | 100% | 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 |