Ratnikova Anna
From Samara, Russia
EMA: 15990370
Common russian riichi rating (CRR)
Rating date Dec. 27, 2023 (latest changes Dec. 27, 2023).
34 place (494.26).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 2.90 * 1) = 14.249820000000001
p1 = (585.59 * 4.05 * 0.43 + 600 * 4.20 * 0.86 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 0) / (4.05 * 0.43 + 4.20 * 0.86 + 3.75 * 1 + 4 * 1 + 1) = 497.1265081838609
p2 = (600 * 4.20 * 0.86 + 551.72 * 3.75 * 1 + 439.25 * 4 * 1 + 585.59 * 4.05 * 0.43) / max_coefficients = 491.3991896037985
score = 497.1265081838609 * 0.5 + 491.3991896037985 * 0.5 = 494.2628488938297
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-12-12 | 31 -> 34 | 507.89 -> 494.26 |
Moscow Riichi 2022: 57% -> 43% |
2023-11-28 | 32 -> 31 | 507.89 | |
2023-11-26 | 32 | 509.71 -> 507.89 | |
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 |
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 | 43% | 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 |