Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date Nov. 20, 2023 (latest changes Nov. 20, 2023).
32 place (509.71).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 2.80 * 1) = 14.149820000000002
p1 = (585.59 * 4.05 * 0.57 + 600 * 4.20 * 0.86 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 0) / (4.05 * 0.57 + 4.20 * 0.86 + 3.75 * 1 + 4 * 1 + 1) = 500.61477128666894
p2 = (600 * 4.20 * 0.86 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 585.59 * 4.05 * 0.57) / max_coefficients = 518.8058929371539
score = 500.61477128666894 * 0.5 + 518.8058929371539 * 0.5 = 509.7103321119114
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-11-06 | 34 -> 32 | 513.32 -> 509.71 |
IX Russian Riichi Championship: 100% -> 86% |
2023-10-22 | 32 -> 34 | 513.32 | |
2023-10-12 | 29 -> 32 | 524.58 -> 513.32 |
Moscow Riichi 2022: 71% -> 57% |
2023-09-20 | 32 -> 29 | 524.58 | |
2023-09-06 | 30 -> 32 | 524.58 | |
2023-09-03 | 35 -> 30 | 474.88 -> 524.58 |
SPB Riichi Open 2023: 0% -> 100% |
2023-08-27 | 34 -> 35 | 474.88 | |
2023-08-26 | 33 -> 34 | 474.88 | |
2023-08-19 | 34 -> 33 | 474.88 | |
2023-08-12 | 33 -> 34 | 479.50 -> 474.88 |
Moscow Riichi 2022: 86% -> 71% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 439 |
|
61/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
2 | 552 |
|
40/88 | 100% | 3.75 | RR | Money can not buy tenpai |
3 | 600 |
|
31/76 | 86% | 4.20 | RR | IX Russian Riichi Championship |
4 | 586 |
|
47/112 | 57% | 4.05 | RR | Moscow Riichi 2022 |
5 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |
6 | 455 |
|
7/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 |