Kuskova Polina
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Oct. 31, 2026 (latest changes Oct. 31, 2026).
102 place (467.60).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (684.21 * 1.50 * 0.57 + 133.33 * 2 * 0.57 + 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 + 112.68 * 3.40 * 1 + 962.96 * 1.70 * 1) / (1.50 * 0.57 + 2 * 0.57 + 2.25 * 1 + 3.40 * 1 + 2.30 * 1 + 3.10 * 1 + 2.90 * 1 + 2.45 * 1 + 4.71 * 1 + 2.45 * 1 + 3.40 * 1 + 1.70 * 1) = 457.0588945169423
p2 = (640 * 3.10 * 1 + 412.59 * 4.71 * 1 + 784.31 * 2.30 * 1 + 962.96 * 1.70 * 1) / max_coefficients = 478.14730694354313
score = 457.0588945169423 * 0.5 + 478.14730694354313 * 0.5 = 467.6031007302427
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-10-31 | 104 -> 102 | 467.60 | |
| 2026-10-27 | 105 -> 104 | 467.60 | |
| 2026-10-24 | 112 -> 105 | 449.59 -> 467.60 |
First Yaroslavl tournament: 0% -> 100% |
| 2026-10-17 | 113 -> 112 | 449.59 | |
| 2026-10-15 | 114 -> 113 | 449.59 | |
| 2026-10-13 | 118 -> 114 | 449.59 | |
| 2026-10-08 | 119 -> 118 | 448.15 -> 449.59 |
Random not fault: 71% -> 57% |
| 2026-10-03 | 121 -> 119 | 448.15 | |
| 2026-09-26 | 118 -> 121 | 448.15 | |
| 2026-09-17 | 118 | 449.10 -> 448.15 |
HaTiKo: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 963 |
|
🥈 | 2/28 | 100% | 1.70 | CRR | First Yaroslavl tournament | Yaroslavl |
| 2 | 113 |
|
64/72 | 100% | 3.40 | RR | Sunset Wolf Cup 2026 | Saint Petersburg | |
| 3 | 74 |
|
26/28 | 100% | 2.45 | RR | Ivanovo Babayka 2026 | Ivanovo | |
| 4 | 413 |
|
85/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 5 | 444 |
|
16/28 | 100% | 2.45 | RR | Hatiko under the sakura | Korolyov | |
| 6 | 476 |
|
23/43 | 100% | 2.90 | RR | Sturgeon in tempai | Saratov | |
| 7 | 640 |
|
19/51 | 100% | 3.10 | RR | Moscow Riichi 2026 | Moscow | |
| 8 | 784 |
|
12/52 | 100% | 2.30 | CRR | "Furin" club tournament: for the anniversary | Moscow | |
| 9 | 392 |
|
46/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 10 | 684 |
|
7/20 | 100% | 2.25 | RR | Winter Hatiko | Korolyov | |
| 11 | 105 |
|
52/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow | |
| 12 | 133 |
|
14/16 | 57% | 2.00 | RR | Random not fault | Moscow | |
| 13 | 684 |
|
7/20 | 57% | 1.50 | CRR | HaTiKo | Korolyov |