Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date May 20, 2023 (latest changes May 20, 2023).
43 place (409.67).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.71 + 3.45 * 0.57) = 12.72138
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 = 384.51960400522586
score = 434.81066666666663 * 0.5 + 384.51960400522586 * 0.5 = 409.6651353359463
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-05-20 | 45 -> 43 | 402.40 -> 409.67 | |
2023-04-19 | 46 -> 45 | 399.06 -> 402.40 | |
2023-03-28 | 49 -> 46 | 395.75 -> 399.06 | |
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 |
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" |