Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date July 6, 2023 (latest changes July 6, 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 |
---|---|---|---|
2023-06-12 | 32 -> 30 | 488.61 -> 484.51 |
Moscow Riichi 2022: 100% -> 86% |
2023-06-11 | 42 -> 32 | 412.74 -> 488.61 |
Money can not buy tenpai: 0% -> 100% |
2023-05-28 | 43 -> 42 | 409.67 -> 412.74 | |
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 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 552 |
|
40/88 | 100% | 3.75 | RR | Money can not buy tenpai |
2 | 600 |
|
31/76 | 100% | 4.20 | RR | IX Russian Riichi Championship |
3 | 586 |
|
47/112 | 86% | 4.05 | RR | Moscow Riichi 2022 |
4 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |