Tkachenko Maria
From Sarov, Russia
EMA: 15990422
Internal rating (RR)
Rating date May 3, 2025 (latest changes May 3, 2025).
56 place (531.83).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (981.31 * 4.60 * 1 + 63.16 * 3.85 * 1 + 325.84 * 3.75 * 1 + 741.94 * 3.10 * 1 + 285.71 * 3.50 * 1) / (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1 + 3.50 * 1) = 493.5686170212767
p2 = (981.31 * 4.60 * 1 + 741.94 * 3.10 * 1 + 325.84 * 3.75 * 1 + 285.71 * 3.50 * 1) / max_coefficients = 570.0902208201893
score = 493.5686170212767 * 0.5 + 570.0902208201893 * 0.5 = 531.829418920733
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-03 | 57 -> 56 | 515.13 -> 531.83 |
Riichi over The Volga 2025: 0% -> 100% |
| 2025-04-11 | 58 -> 57 | 515.13 | |
| 2025-03-10 | 59 -> 58 | 515.13 | |
| 2025-03-03 | 62 -> 59 | 515.13 | |
| 2025-03-02 | 59 -> 62 | 515.13 | |
| 2025-02-16 | 50 -> 59 | 515.13 | |
| 2025-02-02 | 48 -> 50 | 515.13 | |
| 2025-01-26 | 49 -> 48 | 515.13 | |
| 2025-01-07 | 82 -> 49 | 399.15 -> 515.13 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2025-01-03 | 85 -> 82 | 399.15 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 286 |
|
51/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 2 | 742 |
|
9/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow |
| 3 | 326 |
|
61/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow |
| 4 | 63 |
|
90/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 5 | 981 |
|
3/108 | 100% | 4.60 | RR | X Russian Championship | Perm |
| 6 | 144 |
|
96/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |
| 7 | 979 |
|
2/48 | 0% | 3.10 | RR | Agari team tournament | Moscow |
| 8 | 709 |
|
17/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov |
| 9 | 0 |
|
36/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow |
| 10 | 193 |
|
68/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm |