Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date May 19, 2024 (latest changes May 19, 2024).
41 place (534.35).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999
p1 = (585.59 * 4.05 * 0.14 + 600 * 4.20 * 0.43 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 644.86 * 4.60 * 1) / (4.05 * 0.14 + 4.20 * 0.43 + 3.75 * 1 + 4 * 1 + 4.60 * 1) = 557.4978112705901
p2 = (644.86 * 4.60 * 1 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 600 * 4.20 * 0.43) / max_coefficients = 511.1954545454546
score = 557.4978112705901 * 0.5 + 511.1954545454546 * 0.5 = 534.3466329080223
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-05-12 | 61 -> 41 | 427.07 -> 534.35 |
X Russian Championship: 0% -> 100% |
| 2024-05-06 | 57 -> 61 | 443.49 -> 427.07 |
IX Russian Riichi Championship: 57% -> 43% |
| 2024-05-05 | 56 -> 57 | 443.49 | |
| 2024-04-27 | 57 -> 56 | 443.49 | |
| 2024-04-25 | 58 -> 57 | 443.49 | |
| 2024-04-22 | 59 -> 58 | 443.49 | |
| 2024-04-12 | 54 -> 59 | 458.38 -> 443.49 |
Moscow Riichi 2022: 29% -> 14% |
| 2024-03-30 | 50 -> 54 | 458.38 | |
| 2024-03-20 | 51 -> 50 | 458.38 | |
| 2024-03-10 | 42 -> 51 | 469.19 -> 458.38 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 645 |
|
39/108 | 100% | 4.60 | RR | X Russian Championship |
| 2 | 439 |
|
61/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 3 | 552 |
|
40/88 | 100% | 3.75 | RR | Money can not buy tenpai |
| 4 | 600 |
|
31/76 | 43% | 4.20 | RR | IX Russian Riichi Championship |
| 5 | 586 |
|
47/112 | 14% | 4.05 | RR | Moscow Riichi 2022 |
| 6 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |
| 7 | 455 |
|
7/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 |