Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date June 11, 2023 (latest changes June 11, 2023).
36 place (483.75).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.75 * 1 + 2.80 * 1) = 14.8
p1 = (585.59 * 4.05 * 1 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0 + 0) / (4.05 * 1 + 4.20 * 1 + 3.75 * 1 + 1 + 1) = 497.185
p2 = (600 * 4.20 * 1 + 585.59 * 4.05 * 1 + 551.72 * 3.75 * 1) / max_coefficients = 470.3101351351351
score = 497.185 * 0.5 + 470.3101351351351 * 0.5 = 483.74756756756756
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-06-11 | 54 -> 36 | 397.91 -> 483.75 |
Money can not buy tenpai: 0% -> 100% |
| 2023-05-20 | 55 -> 54 | 391.49 -> 397.91 | |
| 2023-05-06 | 54 -> 55 | 391.49 | |
| 2023-05-01 | 53 -> 54 | 391.49 | |
| 2023-04-19 | 54 -> 53 | 391.49 | |
| 2023-04-15 | 54 | 391.49 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 552 |
|
40/88 | 100% | 3.75 | RR | Money can not buy tenpai | Perm |
| 2 | 600 |
|
31/76 | 100% | 4.20 | RR | IX Russian Riichi Championship | Perm |
| 3 | 586 |
|
47/112 | 100% | 4.05 | RR | Moscow Riichi 2022 | Moscow |
| 4 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm |
| 5 | 455 |
|
7/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 | Samara |