Tkachenko Maria
From Sarov, Russia
EMA: 15990422
Internal rating (RR)
Rating date Jan. 22, 2025 (latest changes Jan. 7, 2025).
49 place (515.13).
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 + 0) / (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1 + 1) = 507.9196319018406
p2 = (981.31 * 4.60 * 1 + 741.94 * 3.10 * 1 + 325.84 * 3.75 * 1 + 63.16 * 3.85 * 1) / max_coefficients = 522.3400630914826
score = 507.9196319018406 * 0.5 + 522.3400630914826 * 0.5 = 515.1298474966616
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-07 | 82 -> 49 | 399.15 -> 515.13 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2025-01-03 | 85 -> 82 | 399.15 | |
| 2024-12-11 | 87 -> 85 | 399.15 | |
| 2024-11-06 | 88 -> 87 | 399.15 | |
| 2024-11-03 | 87 -> 88 | 399.15 | |
| 2024-10-13 | 90 -> 87 | 360.91 -> 399.15 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-10-11 | 93 -> 90 | 360.91 | |
| 2024-09-06 | 94 -> 93 | 360.91 | |
| 2024-09-03 | 96 -> 94 | 355.48 -> 360.91 | |
| 2024-09-01 | 56 -> 96 | 430.33 -> 355.48 |
SPB Riichi Open 2024: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 742 |
|
9/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 326 |
|
61/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 3 | 63 |
|
90/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 4 | 981 |
|
3/108 | 100% | 4.60 | RR | X Russian Championship |
| 5 | 144 |
|
96/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |
| 6 | 979 |
|
2/48 | 0% | 3.10 | RR | Agari team tournament |
| 7 | 709 |
|
17/56 | 0% | 3.30 | RR | Kirov Tournament |
| 8 | 0 |
|
36/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 |
| 9 | 193 |
|
68/84 | 0% | 4.20 | EMA | Haru Shanten 2019 |