Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date Aug. 20, 2023 (latest changes Aug. 20, 2023).
33 place (474.88).
how we calculated rating score
max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 2.80 * 1) = 13.642914999999999
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 = 460.5335443341837
score = 489.2207104072557 * 0.5 + 460.5335443341837 * 0.5 = 474.8771273707197
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-08-19 | 34 -> 33 | 474.88 | |
2023-08-12 | 33 -> 34 | 479.50 -> 474.88 |
Moscow Riichi 2022: 86% -> 71% |
2023-07-28 | 35 -> 33 | 479.50 | |
2023-06-12 | 36 -> 35 | 483.75 -> 479.50 |
Moscow Riichi 2022: 100% -> 86% |
2023-06-11 | 54 -> 36 | 397.91 -> 483.75 |
Money can not buy tenpai: 0% -> 100% |
2023-05-20 | 55 -> 54 | 391.49 -> 397.91 | |
2023-05-06 | 54 -> 55 | 391.49 | |
2023-05-01 | 53 -> 54 | 391.49 | |
2023-04-19 | 54 -> 53 | 391.49 | |
2023-03-28 | 57 -> 54 | 391.49 |
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 | 71% | 4.05 | RR | Moscow Riichi 2022 |
4 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |
5 | 455 |
|
7/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 |