Ratnikova Anna
From Samara, Russia
EMA: 15990370
Internal rating (RR)
Rating date Aug. 4, 2024 (latest changes Aug. 4, 2024).
47 place (501.47).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.65 * 1 + 3.75 * 0.86) = 15.464125
p1 = (600 * 4.20 * 0.29 + 551.72 * 3.75 * 0.86 + 439.25 * 4 * 1 + 644.86 * 4.60 * 1 + 329.11 * 3.65 * 1) / (4.20 * 0.29 + 3.75 * 0.86 + 4 * 1 + 4.60 * 1 + 3.65 * 1) = 505.15345445424026
p2 = (644.86 * 4.60 * 1 + 551.72 * 3.75 * 0.86 + 439.25 * 4 * 1 + 329.11 * 3.65 * 1) / max_coefficients = 497.79408792932037
score = 505.15345445424026 * 0.5 + 497.79408792932037 * 0.5 = 501.4737711917803
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-08-04 | 42 -> 47 | 500.23 -> 501.47 |
Riichi over Volga: 0% -> 100% |
| 2024-07-14 | 38 -> 42 | 500.23 | |
| 2024-07-06 | 36 -> 38 | 514.09 -> 500.23 |
IX Russian Riichi Championship: 43% -> 29% |
| 2024-06-11 | 36 | 534.35 -> 514.09 |
Money can not buy tenpai: 100% -> 86% |
| 2024-06-09 | 33 -> 36 | 534.35 | |
| 2024-05-12 | 36 -> 33 | 438.94 -> 534.35 |
X Russian Championship: 0% -> 100% |
| 2024-05-06 | 36 | 451.24 -> 438.94 |
IX Russian Riichi Championship: 57% -> 43% |
| 2024-04-12 | 36 | 466.60 -> 451.24 |
Moscow Riichi 2022: 29% -> 14% |
| 2024-03-30 | 33 -> 36 | 466.60 | |
| 2024-03-20 | 34 -> 33 | 466.60 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 329 |
|
54/80 | 100% | 3.65 | RR | Riichi over Volga |
| 2 | 645 |
|
39/108 | 100% | 4.60 | RR | X Russian Championship |
| 3 | 439 |
|
61/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 4 | 552 |
|
40/88 | 86% | 3.75 | RR | Money can not buy tenpai |
| 5 | 600 |
|
31/76 | 29% | 4.20 | RR | IX Russian Riichi Championship |
| 6 | 586 |
|
47/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |
| 7 | 198 |
|
74/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |