Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date Aug. 16, 2023 (latest changes Aug. 16, 2023).
29 place (489.22).
how we calculated rating score
max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 3.50 * 0.57) = 12.842815
p1 = (585.59 * 4.05 * 0.71 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0 + 0) / (4.05 * 0.71 + 4.20 * 1 + 3.75 * 1 + 1 + 1) = 489.2207104072557
p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 585.59 * 4.05 * 0.71) / max_coefficients = 489.2245197022615
score = 489.2207104072557 * 0.5 + 489.2245197022615 * 0.5 = 489.2226150547586
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-08-12 | 29 | 493.38 -> 489.22 |
Moscow Riichi 2022: 86% -> 71% |
| 2023-08-04 | 29 | 493.38 |
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 | 71% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 4 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm |