Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date March 20, 2023 (latest changes March 20, 2023).
49 place (395.75).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.86 + 3.45 * 0.71) = 13.714185
p1 = (585.59 * 4.05 * 1 + 600 * 4.20 * 1 + 0 + 0 + 0) / (4.05 * 1 + 4.20 * 1 + 1 + 1 + 1) = 434.81066666666663
p2 = (600 * 4.20 * 1 + 585.59 * 4.05 * 1) / max_coefficients = 356.683244392576
score = 434.81066666666663 * 0.5 + 356.683244392576 * 0.5 = 395.74695552962135
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-03-20 | 49 | 389.47 -> 395.75 | |
2023-03-06 | 51 -> 49 | 389.47 | |
2023-02-19 | 53 -> 51 | 387.17 -> 389.47 | |
2023-01-28 | 54 -> 53 | 383.71 -> 387.17 | |
2023-01-06 | 56 -> 54 | 383.71 | |
2022-12-19 | 56 | 382.11 -> 383.71 | |
2022-11-28 | 56 | 378.31 -> 382.11 | |
2022-11-06 | 56 | 378.31 |
IX Russian Riichi Championship: 0% -> 100% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 600 |
|
31/76 | 100% | 4.20 | RR | IX Russian Riichi Championship |
2 | 586 |
|
47/112 | 100% | 4.05 | RR | Moscow Riichi 2022 |
3 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |