Kuskova Polina
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Aug. 11, 2026 (latest changes Aug. 8, 2026).
100 place (467.07).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (684.21 * 1.50 * 0.71 + 133.33 * 2 * 0.71 + 684.21 * 2.25 * 1 + 391.89 * 3.40 * 1 + 784.31 * 2.30 * 1 + 640 * 3.10 * 1 + 476.19 * 2.90 * 1 + 444.44 * 2.45 * 1 + 412.59 * 4.71 * 1 + 74.07 * 2.45 * 1) / (1.50 * 0.71 + 2 * 0.71 + 2.25 * 1 + 3.40 * 1 + 2.30 * 1 + 3.10 * 1 + 2.90 * 1 + 2.45 * 1 + 4.71 * 1 + 2.45 * 1) = 467.30570355774444
p2 = (640 * 3.10 * 1 + 412.59 * 4.71 * 1 + 784.31 * 2.30 * 1 + 684.21 * 2.25 * 1) / max_coefficients = 466.8440122742167
score = 467.30570355774444 * 0.5 + 466.8440122742167 * 0.5 = 467.0748579159806
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-08-08 | 100 | 465.26 -> 467.07 |
Random not fault: 86% -> 71% |
| 2026-08-04 | 101 -> 100 | 465.26 | |
| 2026-08-03 | 102 -> 101 | 465.26 | |
| 2026-08-02 | 97 -> 102 | 485.24 -> 465.26 |
Ivanovo Babayka 2026: 0% -> 100% |
| 2026-07-25 | 96 -> 97 | 485.24 | |
| 2026-07-17 | 96 | 486.04 -> 485.24 |
HaTiKo: 86% -> 71% |
| 2026-07-12 | 94 -> 96 | 486.04 | |
| 2026-07-11 | 92 -> 94 | 486.04 | |
| 2026-07-02 | 93 -> 92 | 486.04 | |
| 2026-06-15 | 94 -> 93 | 477.58 -> 486.04 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 74 |
|
26/28 | 100% | 2.45 | RR | Ivanovo Babayka 2026 | Ivanovo | |
| 2 | 413 |
|
85/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 3 | 444 |
|
16/28 | 100% | 2.45 | RR | Hatiko under the sakura | Korolyov | |
| 4 | 476 |
|
23/43 | 100% | 2.90 | RR | Sturgeon in tempai | Saratov | |
| 5 | 640 |
|
19/51 | 100% | 3.10 | RR | Moscow Riichi 2026 | Moscow | |
| 6 | 784 |
|
12/52 | 100% | 2.30 | CRR | "Furin" club tournament: for the anniversary | Moscow | |
| 7 | 392 |
|
46/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 8 | 684 |
|
7/20 | 100% | 2.25 | RR | Winter Hatiko | Korolyov | |
| 9 | 105 |
|
52/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow | |
| 10 | 133 |
|
14/16 | 71% | 2.00 | RR | Random not fault | Moscow | |
| 11 | 684 |
|
7/20 | 71% | 1.50 | CRR | HaTiKo | Korolyov |