Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date June 27, 2023 (latest changes June 27, 2023).
30 place (484.51).
how we calculated rating score
max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.71) = 13.921305
p1 = (585.59 * 4.05 * 0.86 + 600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 0 + 0) / (4.05 * 0.86 + 4.20 * 1 + 3.75 * 1 + 1 + 1) = 493.3733842326966
p2 = (600 * 4.20 * 1 + 551.72 * 3.75 * 1 + 585.59 * 4.05 * 0.86) / max_coefficients = 475.6515283588715
score = 493.3733842326966 * 0.5 + 475.6515283588715 * 0.5 = 484.51245629578403
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-06-19 | 30 | 484.51 |
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 | 86% | 4.05 | RR | Moscow Riichi 2022 | Moscow |
| 4 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm |