Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date Aug. 13, 2026 (latest changes Aug. 13, 2026).
23 place (692.34).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (821.05 * 3.85 * 0.14 + 833.33 * 2.60 * 0.43 + 885.71 * 3.50 * 0.71 + 418.60 * 3 * 0.86 + 763.64 * 3 * 1 + 378.38 * 3.40 * 1 + 857.14 * 2.90 * 1 + 790.21 * 4.71 * 1) / (3.85 * 0.14 + 2.60 * 0.43 + 3.50 * 0.71 + 3 * 0.86 + 3 * 1 + 3.40 * 1 + 2.90 * 1 + 4.71 * 1) = 696.8146679761638
p2 = (790.21 * 4.71 * 1 + 857.14 * 2.90 * 1 + 763.64 * 3 * 1 + 885.71 * 3.50 * 0.71) / max_coefficients = 687.8620993430766
score = 696.8146679761638 * 0.5 + 687.8620993430766 * 0.5 = 692.3383836596201
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-08-13 | 24 -> 23 | 692.34 | |
| 2026-08-04 | 26 -> 24 | 687.83 -> 692.34 |
Riichi over Volga: 14% -> 0% |
| 2026-08-03 | 26 | 685.17 -> 687.83 |
Two roosters and Chuckles: 100% -> 86% |
| 2026-07-26 | 26 | 686.44 -> 685.17 |
Riichi On Ice: 57% -> 43% |
| 2026-07-12 | 25 -> 26 | 686.44 | |
| 2026-07-07 | 24 -> 25 | 686.44 | |
| 2026-07-03 | 23 -> 24 | 702.87 -> 686.44 |
Riichi over The Volga 2025: 86% -> 71% |
| 2026-07-01 | 23 | 704.44 -> 702.87 |
SPB Riichi Open 2024: 29% -> 14% |
| 2026-06-15 | 24 -> 23 | 691.45 -> 704.44 | |
| 2026-06-14 | 32 -> 24 | 627.41 -> 691.45 |
XII Russian Championship: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 790 |
|
31/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 2 | 857 |
|
7/43 | 100% | 2.90 | RR | Sturgeon in tempai | Saratov | |
| 3 | 378 |
|
47/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 4 | 764 |
|
14/56 | 100% | 3.00 | RR | Riichi On Ice 2026 | Samara | |
| 5 | 419 |
|
26/44 | 86% | 3.00 | RR | Two roosters and Chuckles | Kirov | |
| 6 | 886 |
|
9/71 | 71% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 7 | 833 |
|
8/43 | 43% | 2.60 | RR | Riichi On Ice | Samara | |
| 8 | 821 |
|
18/96 | 14% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 9 | 329 |
|
54/80 | 0% | 3.65 | RR | Riichi over Volga | Samara | |
| 10 | 645 |
|
39/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 11 | 439 |
|
61/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 12 | 552 |
|
40/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 13 | 600 |
|
31/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 14 | 586 |
|
47/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 15 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm | |
| 16 | 455 |
|
7/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 | Samara |