Tkachenko Maria
From Sarov, Russia
EMA: 15990422
Common russian riichi rating (CRR)
Rating date Jan. 13, 2026 (latest changes Jan. 12, 2026).
46 place (573.48).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (981.31 * 4.60 * 0.29 + 63.16 * 3.85 * 0.57 + 325.84 * 3.75 * 0.71 + 741.94 * 3.10 * 0.86 + 285.71 * 3.50 * 1 + 746.27 * 4.10 * 1 + 833.33 * 3 * 1) / (4.60 * 0.29 + 3.85 * 0.57 + 3.75 * 0.71 + 3.10 * 0.86 + 3.50 * 1 + 4.10 * 1 + 3 * 1) = 556.945091053893
p2 = (746.27 * 4.10 * 1 + 833.33 * 3 * 1 + 741.94 * 3.10 * 0.86 + 981.31 * 4.60 * 0.29) / max_coefficients = 590.0127090301004
score = 556.945091053893 * 0.5 + 590.0127090301004 * 0.5 = 573.4789000419967
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-12 | 42 -> 46 | 601.99 -> 573.48 |
X Russian Championship: 43% -> 29% |
| 2026-01-10 | 41 -> 42 | 601.99 | |
| 2026-01-07 | 58 -> 41 | 542.54 -> 601.99 |
Moscow Open Riichi Marathon 2026: 0% -> 100% Moscow Open Riichi Marathon: 100% -> 86% |
| 2026-01-03 | 57 -> 58 | 542.54 | |
| 2026-01-01 | 61 -> 57 | 535.44 -> 542.54 |
SPB Riichi Open 2024: 71% -> 57% |
| 2025-12-25 | 62 -> 61 | 535.44 | |
| 2025-12-13 | 65 -> 62 | 534.29 -> 535.44 |
Moscow Riichi 2024: 86% -> 71% |
| 2025-12-09 | 66 -> 65 | 534.29 | |
| 2025-12-07 | 63 -> 66 | 534.29 | |
| 2025-12-04 | 66 -> 63 | 534.29 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 833 |
|
6/31 | 100% | 3.00 | RR | Moscow Open Riichi Marathon 2026 | Moscow | |
| 2 | 746 |
|
18/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 3 | 286 |
|
51/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 4 | 742 |
|
9/32 | 86% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 5 | 326 |
|
61/90 | 71% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 6 | 63 |
|
90/96 | 57% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 7 | 981 |
|
🥉 | 3/108 | 29% | 4.60 | RR | X Russian Championship | Perm |
| 8 | 144 |
|
96/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 9 | 979 |
|
🥈 | 2/48 | 0% | 3.10 | RR | Agari team tournament | Moscow |
| 10 | 709 |
|
17/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov | |
| 11 | 0 |
|
36/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow | |
| 12 | 193 |
|
68/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm |